What is the material of the drill bits?

The drill bits are made of High Speed Steel 4241.

What is the shank type of the drill bits?

The drill bits feature a hex shank connection.

5PCS HSS 4241 Hex Shank 4-22mm Step Drill Bits Set for Metal Drilling

Name: 5PCS HSS 4241 Hex Shank 4-22mm Step Drill Bits Set for Metal Drilling
Brand: Johnson Tools Manufactory Co., Ltd.
SKU: 1931369805

Jiangsu, ChinaJohnson Tools Manufactory Co., Ltd.

Negotiable

10 Sets

Sample price:US$10.80/set.Request sample

Product profile

Customized

Standard

SGS

Length

62mm

Model NO.

D12

Type

Core Drill Bit

Material

High Speed Steel

Usage

Ceramic, Tile, Porcelain

Product Name

5PCS HSS 4241 Hex Shank 4-22mm Step Drill Bits Set

Sample

Available

Raw Material

High Speed Steel 4241

Size

3/16"-7/8''

Connector Type

Hex Shank

Application

Metal, Wood , PVC etc.

Transport Package

Plastic Box or Carton

Specification

Customized

Trademark

Johnsontool

Origin

China

HS Code

82075010

Production Capacity

300000PCS Per Month

Key features

High Speed Steel Material: Made from durable High Speed Steel 4241 for long-lasting performance.

Hex Shank Design: Features a hex shank for secure grip and efficient power transmission.

Wide Size Range: Available in multiple sets covering sizes from 3/16 to 7/8 inch.

OEM/ODM Service: Supports OEM and ODM services with flexible customization options.

100% Quality Inspection: Every product undergoes 100% visual and functional inspection.

Multi-Material Application: Suitable for drilling metal, wood, PVC, ceramic, and tile.

SGS Standard: Meets SGS standards for quality and reliability assurance.

Fast Lead Time: Average lead time is one month for both peak and off-peak seasons.

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: ≤3.69h

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.