Feature

●[Specification] - Twist drill diameter: 8.8 mm / 0.35 inches, drill bit length: 77 mm / 3.03 inches, shaft diameter: 8.8 mm / 0.35 inches, total length: 123 mm / 4.84 inches, 1 x high-speed steel twist drill bit
●Strength and hardness: made of high-speed steel, with a great toughness and hardness, not easy to break, easy chip removal, the drill quenching processing, improving the hardness of use. The surface is black oxidised, not easy to rust.
●Professional and DIY use: this twist drill is suitable for electric drill, hand drill and impact drill. Suitable for stainless steel, iron, copper, aluminium alloys, wood, plastic drilling and carving.
●Spiral design: the spiral design ensures quick cleaning of the chips. The black cutting edge ensures a smooth cut without punctures. The chips cannot easily stick to the tool.
●Note: The life of the twist drill can be largely extended by proper use. Please check whether the twist drill bits are used cool and gently


Description

Description:

1. Made of high-speed steel, with great toughness and hardness that does not break easily, easy chip removal, the machining of the drill quenching, improve the hardness of use. The surface is treated with black oxide, not easy to rust.
2. This twist drill is suitable for electric drill, electric hand drill and electric impact drill. Suitable for stainless steel, iron, copper, aluminium alloys, wood, plastic drilling and carving.
3. Spiral flute for quick cleaning of shavings. The sharp cutting edge ensures a smooth cut without punctures. The chip removal is not easy to attach to the tool.
4. Suitable for different types of cooling conditions, such as oil mist, water, oil, air cooling.


Specification:

Shaft type: round shaft.
Tool flute type: spiral.
Rock fountain hardness: 63-66 HRC.
Material: high-speed steel 6542.
Twist drill diameter: 8.8 mm / 0.35 inches.
Drill bit length: 77 mm / 3.03 inches.
Shaft diameter: 8.8 mm / 0.35 inches.
Total length: 123 mm / 4.84 inches.
1 x high-speed steel twist drill