Is the product suitable for polishing granite?

Yes, it is ideal for polishing the edges, arcs, and ovals of granite, marble, and other stones.

What is the main advantage of vacuum brazed technology?

It ensures diamonds are firmly brazed for more efficient and high-speed grinding compared to sintered technology.

20mm Stone Granite Hole Milling Cutter Bits Diamond Router Bits for Polishing

Name: 20mm Stone Granite Hole Milling Cutter Bits Diamond Router Bits for Polishing
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1934154265

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

US$8.00

10-199 Pieces

US$7.50

200+ Pieces

Sample price:US$8.00/piece.Request sample

Product profile

Customized

Length

Taper-length

Type

Core Drill Bit

Material

Diamond

Usage

Masonry Drilling

Outer Diameter

20mm

Technology

Vacuum Brazed

Thread Size

M14 or 5/8"-11

Grit

Coarse / Medium / Fine

Delivery Date

15days

Transport Package

Carton

Specification

Trademark

Johnson Tools

Origin

China

HS Code

8467991000

Production Capacity

10000PCS/Month

Key features

Vacuum Brazed Technology: Diamonds firmly brazed for efficient, high-speed grinding and polishing.

Customizable Grit Options: Available in Coarse, Medium, or Fine grit to suit different stone needs.

Durable Performance: More aggressive and durable compared to sintered technology bits.

Versatile Stone Application: Ideal for polishing edges, arcs, and ovals on granite, marble, and stone.

Eco-Friendly Design: Environmental protection with no pollution during operation.

Flexible Customization: Full, minor, and flexible customization available from samples or designs.

Fast Delivery: Standard delivery date is 15 days for customized orders.

OEM and ODM Services: Manufacturer offers both OEM and ODM services for tailored solutions.

Company profile

Years of Export ExperiencePatents AwardedFast DeliveryOEM Services

Johnson Tools Manufactory Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 17 Years CertifiedNearest Port: Shanghai Port, Ningbo, QingdaoAverage Response Time: ≤3.86h

AI-Powered supplier vetting

SummaryThe supplier provides OEM and ODM services and supports extensive customization, including sample-, design-, full-, minor-, and flexible customization. It has 17 years of export experience, self-managed import/export rights, 90% export sales, and accepts multiple trade and payment terms. Production is conducted on one line, supported by 11–20 quality-control staff and stated advanced equipment and checking systems. However, no management-system certifications, SDK, new products in the past year, overseas service facilities, or offline trade-show participation are reported. Service procedures and complaint handling lack written records, and production batches are not continuously reconciled. Financial and cash-flow evidence is limited to year labels, so financial credibility cannot be conclusively assessed.

Supplier typeThe supplier is an OEM/ODM manufacturer with its own factory location, one production line, stated production output, advanced equipment, and a technical workforce. It also provides export services directly through self-managed import/export rights, indicating a manufacturing-oriented supplier rather than a pure trading intermediary.

CertificationsThe supplier’s certification of management systems is explicitly listed as NIL. This is a stated absence of certification evidence and represents a deficiency for this field.

After-Sales capabilityThe supplier has a complaint-handling procedure, but no written records, and it lacks written service-assessment and corrective/preventive-action procedures or records. It also reports no overseas warehouses, showrooms, agents, branches, or offline trade-show participation, limiting documented overseas service support.

R&D capabilityThe supplier provides ODM and broad design customization, but reports no available SDK and no new products during the past year. These explicit limitations outweigh the design-service evidence when assessing demonstrated recent innovation capability.

Production capacityThe supplier reports one production line, 11–20 quality-control staff, advanced production and checking equipment, and flexible export fulfillment with one-month lead times in both peak and off-season. However, it does not continuously reconcile quantities for each batch or mass production, so production controls are not fully documented.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also offers ODM services. This is strong direct evidence of broad customization capability.