What diamond quality is used in this product?

Drill bits in 6mm and 8mm sizes use top-grade diamonds with a grit size of 40#.

Which machines are compatible with this drill bit?

It is compatible with stationary drills, cordless drills, and power drills.

What is the recommended RPM for this drill bit?

The optimum RPM is over 1,500 for best performance.

Fast Drilling Diamond Hole Saw Diamond Drill Bit for Porcelain Granite Drill Bit

Name: Fast Drilling Diamond Hole Saw Diamond Drill Bit for Porcelain Granite Drill Bit
Brand: QUANZHOU ZHUOSHI SUPERHARD TOOL CO., LTD.
SKU: 1951315915

Fujian, ChinaQUANZHOU ZHUOSHI SUPERHARD TOOL CO., LTD.

US$2.50-6.00

1 PCS

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Customized

Length

Taper-length

Model NO.

ZS25-DB012

Type

Core Drill Bit

Material

Diamond

Usage

Drilling

Kind

Diamond Drill

Manufacturing Arts

Vacuum Sintered

Machines

Stationary Drill, Cordless Drill, Power Drill

Application

Dry Drill All Tiles, Porcealins, etc

Optimum Rpm

Over 1, 500

Feature

Self Cooling, Self Sharpening

Speed

20s/Hole

Life

30holes on 17mm Red Granite, Dry Drill

Transport Package

Transparent Plastic Box

Specification

5-125mm

Trademark

WANSHIN

Origin

China

HS Code

82075010

Production Capacity

20000PCS/Month

Key features

Vacuum Brazed Technology: Vacuum brazed dry drill bits for granites, marble, hard tiles, and porcelain.

Extended Service Life: Lasts 30 holes on 17mm red granite; life is times longer than electroplated bits.

High Drilling Speed: Fantastic fast drilling speed with a rate of 20 seconds per hole.

Self-Cooling Design: Features cooling slots for self-cooling, self-sharpening, and easier core removal.

Premium Diamond Quality: 6mm and 8mm sizes use top-grade diamonds; grit size is 40#.

Versatile Application: Suitable for dry drilling all tiles, porcelains, and wet conditions for better performance.

Wide Compatibility: Works with stationary drills, cordless drills, and power drills.

European Market Accepted: Widely accepted among many European countries as a best choice for drilling.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceQuality AssuranceQA/QC Inspectors

QUANZHOU ZHUOSHI SUPERHARD TOOL CO., LTD.

Fujian, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2007-10-01Nearest Port: XIAMENAverage Response Time: ≤18hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW

AI-Powered supplier vetting

SummaryThe supplier is located in Xiamen, Fujian, China, and reports production of diamond segments, saw blades, and drill bits. It has 6–10 R&D engineers, 6–10 quality-control staff in one slice, and offers flexible customization, ODM, and OEM services. However, the records show no approved-supplier list, no written corrective-action or complaint-handling procedures, no raw-material traceability, and only limited overseas service infrastructure. Quality assurance is stated as present, but finished products are checked by packing staff and another slice reports one quality assurance/control inspector. Financial information is insufficient for assessment, and no customer cases are provided.

After-Sales capabilityThe supplier reports in-stock service capability and training as an overseas service offering, with Xiamen Port identified as the nearest port. However, it has no overseas agents or branches, no overseas warehouse or showroom, has served zero countries, and lacks written complaint-handling and corrective-action procedures.

R&D capabilityThe supplier reports no new products during the past year, no SDK availability, and no professional technical-supplier R&D capability. Although it offers flexible customization and ODM services, the available evidence does not demonstrate strong product innovation.

Production capacityThe supplier reports annual output of 3,000,000 diamond segments, 500,000 saw blades, and 200,000 drill bits, with stated lead times within 15 working days in both peak and off-season. It also reports in-stock capability and 100% finished-product inspection, but outsourcing procedures and manufacturing contracts have unknown status.

Customization capabilityFlexible customization is explicitly reported, and the supplier states that it provides ODM services and OEM services for popular brands. These records support a positive assessment of customization capability, although no specific customization examples or technical scope are provided.