What materials can these drill bits be used on?

They are ideal for drilling wood, cast iron, heat-treated steel, stainless steel, and other hard materials.

What is included in the 115-piece set?

The set includes 29 fractional sizes (1/16" to 1/2"), 29 letter sizes (A to Z), and 60 numbered sizes (#1 to #60).

What is the point angle of the drill bits?

The drill bits feature an aggressive 135-degree split point.

5% Cobalt HSS 115PC Drill Bit Set 135° Split Point

Name: 5% Cobalt HSS 115PC Drill Bit Set 135° Split Point
Brand: JiangSu XingRui Tools Co., Ltd.
SKU: 1982711242

Jiangsu, ChinaJiangSu XingRui Tools Co., Ltd.

US$32.80

1 Set

Product profile

Customization

Available

Customized

Standard

AISI

Model NO.

XRDB-115PC

Length

Taper-length

Type

Twist Drill Bit

Material

High Speed Steel

Usage

Wood Drilling, Well Drilling, Metal Drilling

Suface

Amber and Black Oxide

Packing

Metal Box

Hardness

64-65HRC

OEM

Shank Type

Straight/3-Flat

Transport Package

Carton

Specification

to be negoniated

Trademark

XINGRUI

Origin

Danyang Jiang Su

HS Code

82075090

Production Capacity

500000

Key features

Cobalt Alloy Composition: Solid M35 material with 5% Cobalt for superior hardness and heat resistance.

Aggressive Split Point Design: 135-degree split point ensures faster cutting and longer life on hard materials.

Comprehensive Size Range: Includes 115 pieces covering 1/16-1/2 inch, No.1-60, and A-Z letter sizes.

Durable Metal Storage Case: Comes with a strong fitted metal box for organized storage and protection.

Versatile Material Application: Ideal for drilling cast iron, heat-treated steel, stainless steel, and other hard materials.

Standard Straight Shank: Features ANSI standard straight shank for compatibility with various chucks.

OEM and ODM Services: Offers full, minor, and flexible customization from samples or designs.

Wear and Heat Resistance: Engineered to withstand high temperatures and wear during demanding drilling tasks.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceIn-stock CapacityFast Delivery

JiangSu XingRui Tools Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1.5 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.71h

AI-Powered supplier vetting

SummaryJiangSu XingRui Tools Co., Ltd. is a China-based limited company established in 2018, with 38 employees and five production lines. It offers thread taps and HSS drill bits, and its stated business scope includes manufacturing and sales of pneumatic and electric tools and metal-cutting processing services. The supplier reports ODM and OEM capabilities, but no available SDK and no new products in the past year. Service-management documentation is weak: no written procedures or records are reported for service assessment, corrective actions, or complaint handling. Overseas service coverage is listed as zero, although FOB, CIF, and EXW quotations and one-month lead times are available. Audit-related data identifies BV and an SGS report period, but the audit result is recorded as 0 without an explanatory interpretation. Financial information consists only of year labels, so financial credibility cannot be assessed.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. It has no stated overseas service coverage, although it lists standard quotation terms and one-month peak- and off-season lead times.

R&D capabilityThe supplier reports no available SDK and no new products during the past year. It does report ODM service availability and OEM capability for popular brands, showing customization-oriented development support despite limited evidence of recent product innovation.

Production capacityThe supplier reports five production lines, 6–10 quality-control staff, one year of total R&D-engineer experience, and an annual production-output category. Its stated scope also includes manufacturing and sales of pneumatic and electric tools and metal-cutting processing services, supporting the existence of production operations, although engineering experience is limited.

Customization capabilityThe supplier explicitly reports ODM service availability and OEM capability for popular brands. Its product scope includes thread taps and HSS drill bits, while its broader business scope includes manufacturing and metal-cutting processing services, supporting a positive assessment of customization capability.