Does the product come with a warranty?

The product is made of high-quality material ensuring durability and long service life.

What is the working length of the bit?

The working length is 40mm, with a total length of 60mm.

M14 20mm Vacuum Brazed Diamond Finger Bits Cutting Hardness Sandstone

Name: M14 20mm Vacuum Brazed Diamond Finger Bits Cutting Hardness Sandstone
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1927169045

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

US$14.50

100-499 Pieces

US$14.20

500-999 Pieces

US$14.00

1,000+ Pieces

Product profile

Customized

Standard

DIN

Length

60mm

Type

Core Drill Bit

Material

Diamond

Usage

Tile Ceramic Drilling

Technology

Vacuum Brazed

Size

20mm

Working Length

40mm

Thread

M14 or 5/8"-11

Drilling Material

Drilling Tile Ceramic Porcelain

Usage Form

Dry Drilling

OEM

Accepted

Product Name

20mm Vacuum Brazed Diamond Milling Finger Bits

Transport Package

Carton

Specification

Trademark

Johnson Tools

Origin

China

HS Code

8207501000

Production Capacity

1000PCS/Month

Key features

Vacuum Brazed Technology: Provides high efficient working performance and durability.

High Quality Material: Solid, durable, high hardness, and long service life.

Precise Drilling: Ensures neat, round, and smooth openings without gaps.

Anti-Rust Treatment: Paint spraying treatment prevents the drill bit from rusting.

Large Chip Removal: Reduces cutting resistance for easier and faster drilling.

Versatile Application: Ideal for dry drilling on porcelain, tile, and ceramic.

Customization Options: Accepts OEM, custom sizes, threads, and colors as required.

Professional Manufacturer: Established in 2000, trusted by customers for quality tools.

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: ≤3.50h

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.