Concrete drill bit Ronix RH-5821, 4 mm is designed for precise and effective drilling in concrete and building materials. The drill bit is made from 45# steel and YG8C carbide, ensuring high strength, wear resistance, and long service life.

The sharp cutting tip ensures precise and effective drilling, while the special heat treatment process increases the drill bit's strength and resistance to heat and wear.

The 4 mm diameter and 75 mm overall length allow for precise small-diameter holes. The drill bit design complies with the DIN 8039 standard.

Specifications

• Brand: Ronix

• Model: RH-5821

• Type: concrete drill bit

• Diameter: 4 mm

• Length: 75 mm

• Material: 45# steel + YG8C carbide

• Hardness: HRC 42–48

• Standard: DIN 8039

• Weight: 0.012 kg

Technical Data

• Model: RH-5821

• Drill type: for concrete

• Diameter: 4 mm

• Length: 75 mm

• Material: 45# steel, YG8C carbide

• Hardness: HRC 42–48

• Standard: DIN 8039

• Net weight: 0.012 kg

Key Features

• YG8C carbide cutting tip — for efficient and precise drilling.

• 45# steel body — ensures structural strength and durability.

• Heat treatment — enhances strength, heat and wear resistance.

• Sharp cutting edge — enables fast and accurate drilling.

• 4 mm diameter — for making small-diameter holes.

• DIN 8039 standard — compliant structural standard for the drill bit.

Advantages

• High-quality 45# steel + YG8C carbide

• High strength and wear resistance

• Sharp and durable cutting tip

• 4 mm diameter for precise drilling

• 75 mm overall length

• Heat-treated construction

• Enhanced resistance to heat and wear

• Compliant with DIN 8039 standard

Application Areas

• Concrete drilling

• Construction work

• Repair work

• Installation work

• Making small-diameter holes

• Professional and household use

Package Contents

• Ronix RH-5821 concrete drill bit — 1 pc.