Feature

●[Specifications] - Spiral drill diameter: 4 mm/0.16 inch; Drill length: 155 mm/6.1 inch; Shank diameter: 4 mm/0.16 inch; Total length: 200 mm/7.87 inch; 2 x Straight Shank Twist Drills
●[Strength and Hardness] - Made of high-speed steel. HSS (high speed steel) makes the drill body harder and can last a longer drilling life.
●Twisted design: the twisted design improves cutting accuracy by centring the tip. It can avoid moving the drill while working while removing dirt and particles faster and easier.
●Professional and DIY use: suitable for processing non-ferrous metals such as copper and aluminium as well as for hard plastics. If it cannot penetrate, try to adjust the speed.
●[Note] - Please use cool and gently, the life of the twist drill bits can be considerably extended by proper use.


Description

Description:

1. High speed steel HSS (high-speed steel) makes the drill body harder and can last a longer drilling life.
2. With the twisted design, cutting accuracy can be improved by centring the tip. It can avoid moving the drill while working while removing dirt and particles faster and easier.
3. Suitable for working non-ferrous metals such as copper and aluminium as well as hard plastics. If it cannot penetrate, try to adjust the speed.
4. Please use cool and gently, the life of the spiral drill bits can be significantly extended by proper use.


Technical data:

Material: HSS
Shaft type: round shaft
Twist drill diameter: 4 mm / 0.16 inch
Drill length: 155mm/6.1"
Shank Diameter: 4mm/0.16"
Total length: 200 mm / 7.87 inch


Box contents:
:
2 pieces twist drill bits with straight shank.


Note:
:
1. Please use cool and gently, the life of the spiral drill bits can be significantly extended by proper use.
2. When using a hand drill, pay attention to the speed setting. The recommended working speed is 100-1000 r/min. The larger the drilling diameter, the slower the drilling speed should be selected.
3. If the chip removal has a problem, go back and remove the chips in time.