EN
M14 Thread Vacuum Brazed Color Exposed Sand Diamond Hole Saw Set, M14-4pc Dry Drill Bit Kit with Shockproof Aluminum Carry Case, 40/68/110/125mm Dry Cutting Bits for M14 Angle Grinder, Granite Marble Quartz Stone Countertop Drilling Tool
- Overview
- Application
- Advantages
- FAQ
- Recommended Products
Overview
Changshunda Manufacturer Intro
Changshunda Hardware Tools Factory based in Shanxi, China, specializes in vacuum brazed M14 thread heavy-duty diamond dry drill bits, and its flagship large-size colored product is the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case. We own over 12 years of independent R&D and mass production experience for diamond perforation tools, equipped with full-automatic CNC lathes, high-temperature vacuum brazing furnaces and finished product durability testing assembly lines. Every batch of the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case undergoes rigorous cutting sharpness and grit firmness aging tests before shipment to guarantee consistent stable quality.
We independently optimize vacuum brazing grit formulas and custom molded aluminum box packaging molds exclusively for this kit, balancing diamond grit sharpness and wear resistance. As the original manufacturer, we offer flexible OEM & ODM customization for global independent station sellers, hardware wholesalers and cross-border merchants: custom laser brand logos on drill bodies, personalized printed patterns on aluminum storage cases, and adjustable internal drill size combinations. Our factory maintains a stable monthly output of 42,000 sets of this kit, holds complete export certification paperwork, and provides full-cycle technical guidance plus defective product replacement after-sales support for all bulk orders.
1. Product Specification
This heavy-duty M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case is a large-aperture stone drilling set exclusively matched with global M14 spindle angle grinders. The complete M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case contains four widely used large-size colored dry drill bits: 40mm blue, 68mm red, 110mm cyan, 125mm golden yellow, fully covering large sink cutouts, range hood vents, bathtub openings and oversized pipeline holes for kitchen and bathroom stone countertops.
Every drill bit inside the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case adopts unified M14 external threaded shank, total length of 60mm and 40mm deep exposed diamond cutting crown with 15mm high sharp grit segment, enabling one-pass deep dry drilling without cooling water. Each size features a unique colored anti-rust coated body for quick visual size sorting on busy construction sites, paired with side chip removal windows to rapidly discharge thick stone dust and prevent drill jamming during continuous heavy-duty drilling. The customized shockproof aluminum storage case of the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case has dedicated molded inner slots to lock each large drill firmly, its rigid metal shell shields the fragile exposed diamond grit from impact and abrasion during transport and job site carrying, far more durable than flimsy plastic storage boxes. All bits work flawlessly on vitrified tile, marble, granite, quartz and artificial stone, and screw directly onto any M14 angle grinder without extra conversion adapters.
2. Craft & Performance
The core competitive strength of the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case relies on premium high-temperature vacuum brazed exposed diamond grit manufacturing technology. Each drill bit in the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case undergoes strict high-vacuum welding, locking industrial synthetic diamond grains tightly onto the cutting rim to eliminate the common grit shedding flaw of cheap electroplated drill bits. The fully exposed thick diamond grit delivers aggressive, stable dry cutting performance, ideal for outdoor renovation sites without running water supply.
Thick seamless steel tube bodies resist bending under high-speed heavy load rotation pressure, the color-coded anti-corrosion paint layer blocks rust caused by long-term contact with stone dust and moisture, while precision-machined smooth M14 threads never slip or loosen during hours of continuous grinding work. Below is the standardized product specification table following official template:
| Item | Complete Details |
| Place of Origin | Shanxi, China |
| Brand Name | VonLonzo (Changshunda Factory Original Brand) |
| Model Number | M14-4PC-40/68/110/125 |
| Certification | EN 13236 / ISO 9001 / CE EU Safety Certification |
| Set Contents | 4 Pcs Color Coded M14 Vacuum Brazed Dry Diamond Drill Bits (40mm Blue,68mm Red,110mm Cyan,125mm Golden Yellow) + Shockproof Molded Aluminum Storage Case |
| Shank Connection Type | M14 Standard External Threaded Shank |
| Single Drill Total Length | 60mm / 2.36in |
| Effective Dry Cutting Depth | 40mm / 1.57in, Grit Height:15mm / 0.59in |
| Surface Treatment | Color Separated Anti-rust Baking Paint for Quick Size Identification |
| Core Manufacturing Craft | High-Temperature Vacuum Brazed Exposed Thick Diamond Grit Dry Cutting Technology |
| Matching Power Tools | All M14 Thread Shaft Angle Grinders |
| Suitable Drilling Mode | Dry Drilling (No Cooling Water Required), Optional Auxiliary Wet Drilling for Ultra-Hard Granite |
| Compatible Drilling Materials | Vitrified Tile, Ceramic, Marble, Granite, Quartz Stone, Artificial Stone, Natural Slate |
Application
The large-aperture focused M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case targets professional stone countertop fabrication and full-house bathroom & kitchen renovation projects. The 40mm blue drill bit inside the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case handles medium drainage and pipeline holes; 68mm red bit cuts standard sink and vent openings; oversized 110mm cyan and 125mm golden yellow drill bits are specially designed for large bathtub cutouts, wide range hood vents and big pipeline penetration holes on thick granite and quartz countertops.
This kit is an indispensable heavy-duty tool for professional stone fabricators, cabinet installers, renovation contractors and stone processing factory workers. It fits indoor kitchen counter sink punching, vanity and bathtub stone modification, outdoor garden large slab hole processing and commercial stone decoration construction, drastically boosting efficiency for all large-aperture dry drilling operations.
Advantages
1. Targeted Oversized Color-Coded Size Matching: The M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case collects the most demanded large hole sizes for countertop manufacturing, with unique color coding for instant size recognition, one full set covers all heavy-duty large-aperture drilling needs without purchasing separate expensive single large drill bits.
2. Universal Standard M14 Thread Design: Uniform M14 external thread fits all mainstream European and global industrial angle grinders, fast screw-on installation with zero extra adapters needed.
3. Premium Vacuum Brazed Exposed Sand Craft: Ultra-strong diamond grit adhesion delivers sharp long-lasting dry cutting, service life 3–5 times longer than ordinary electroplated drill bit sets on the market.
4. Drop-Proof Molded Aluminum Storage Case: Unlike fragile plastic boxes, the matched aluminum case is wear-resistant, waterproof and shockproof; custom molded slots stop diamond grit from colliding and falling off during transport.
5. Thickened Color Anti-Rust Drill Body: Seamless heavy steel tube plus glossy colored anti-corrosion paint prevents bending and rust after long-term heavy construction; large side chip removal windows reduce overheating and drill jamming risks.
6. Full Global Export Safety Certifications: The complete kit passes EN 13236 diamond tool safety standard, ISO 9001 production audit and CE certification, fully compliant for EU commercial construction and cross-border independent station sales.
FAQ
Q1: Which power tools are compatible with the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case?
A: All drill bits inside the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case adopt standard M14 external threaded shank, compatible with all global M14 spindle angle grinders; simply screw the drill tight on the grinder head before drilling, no conversion adapter required. It cannot work with triangle-shank electric drills or impact hammers.
Q2: Is cooling water mandatory during heavy-duty drilling?
A: Water cooling is not required. The drill bits of the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case use vacuum brazed exposed thick sand craft built for dry cutting, allowing direct stone drilling without water supply. Pause 45 seconds after 2 minutes of continuous deep drilling for heat dissipation to extend drill service life for oversized hard granite.
Q3: What materials are unsuitable for this heavy-duty drill set?
A: This kit works perfectly on vitrified tile, ceramic, marble, granite, quartz stone and slate; avoid reinforced concrete, thick glass and metal steel plates, which will cause severe abrasion and shedding of exposed diamond grit.
Q4: Can I customize logos and size combinations for this kit?
A: Yes, Changshunda Factory supports full OEM customization of the M14 4pc Color Diamond Hole Saw Kit with Aluminum Storage Case. You can order laser-etched brand logos on drill bodies, custom store branding printed on aluminum storage boxes, and adjust internal drill size collocation to match your regional market demand.
Q5: How to maintain and store drill bits after heavy construction work?
A: After drilling, brush all thick stone dust residue off each drill bit, air-dry fully in a ventilated space, then place every drill back into its dedicated molded slot inside the matched aluminum storage case, seal the box tightly and store in a dry environment to prevent diamond cutting head collision abrasion and metal rust.
