Are there any discounts for large orders?

Yes, a 5% discount is offered for orders with a quantity greater than 100 pieces.

Can I order a sample for testing?

Yes, we accept sample orders to allow customers to have a test before bulk purchase.

What is the expected lifespan of the drill bits?

They can typically drill more than 30 holes, and each bit can last dozens of holes drilling marble and similar stones.

18-45mm Vacuum Brazed Wet Cutting Diamond Tile Hole Core Drill Bits Set

Name: 18-45mm Vacuum Brazed Wet Cutting Diamond Tile Hole Core Drill Bits Set
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1990125025

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

US$33.10

10-99 Pieces

US$33.05

100-499 Pieces

US$32.00

500+ Pieces

Sample price:US$33.10/piece.Request sample

Product profile

Customized

Standard

SGS

Length

62mm

Type

Core Drill Bit

Material

Diamond

Usage

Ceramic, Tile, Porcelain

Sample

Available

MOQ

Connector Type

M14. 5/8"-11

Segment Type

Crown Segment

Transport Package

Plastic Box or Carton

Specification

18-45mm

Trademark

Johnsontool

Origin

China

HS Code

82075010

Production Capacity

300000PCS Per Month

Key features

Vacuum Brazed Technology: Superior to electroplating, offering longer life and aggressive cutting for ceramic, porcelain, and stone.

High Precision Drilling: Drills with super high precision while leaving smooth edges with minimal chipping.

Extended Durability: Each bit can last dozens of holes drilling marble and similar stones.

Customization Options: Supports customization from samples, designs, full customization, and minor customization.

Bulk Price Discount: 5% discount offered for orders with quantity greater than 100 pieces.

Sample Testing Available: Accepts sample orders for testing before placing bulk orders.

Versatile Applications: Ideal for drilling ceramic, porcelain, tile, granite, marble, and stone.

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: ≤4.33h

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.