Feature

●★ Rotating drill bit size --- Drilling diameter: 4.5 mm / 0.18 inches; tool groove length: 70 mm/2.76 inches; shaft diameter: 4.5 mm/0.18 inches; total length: 126 mm/4.96 inches; tool groove type: spiral; hardness: HRC63-66; processing technology: fully ground and rolled
●★ Wide use --- Can be used for drilling stainless steel, aluminium alloys, iron, copper, brass, hardwood, hard plastic and other metallic materials in workshops, machinery shops and other industries. For use on drill presses and bench drills.
●★ Spiral Flutes --- Sharp spiral grooves deliver fast, clean and smooth cuts. The spiral grooves allow the removal of metal shavings, saving time and effort in operation.
●★ High Performance Steel --- The straight shank drill is made of high speed steel 6542 with great hardness, toughness, strength and wear resistance. The black oxide treatment increases hardness, rust protection and abrasion resistance.
●★ Useful Notes --- The right lubricant makes cutting or cooling easier. Cool and gentle when using. The recommended speed for hand drills is between 100 and 1000 revolutions per minute. Proper use significantly increases the life of twist drills.


Description

Features:

* Drilling diameter: 4.5 mm / 0.18 inches.
* Tool flute length: 70 mm / 2.76 inches.
* Shaft diameter: 4.5 mm / 0.18 inches.
* Total length: 126 mm / 4.96 inches (extra long).
* Material: high-performance steel 6542 (HSS M2).
* Finish: Black Oxide
* Shaft type: round shaft.
* Tool flute type: spiral.
* Hardness: HRC63-66.
* Type: N type 120 degree
* Processing technology: full grounding and rolling


What is included:

* 2 x rotary drills.


Use and features:

--- Can be used for drilling stainless steel, aluminium alloys, iron, copper, brass, hardwood, hard plastic and other metallic materials in workshops, machinery shops and other industries. For use on drills and bench drills. The right choice of lubricant facilitates cutting or cooling, simplifies machining, increases dimensional accuracy and extends tool life.
--- The twist drill bit with cylinder shank is made of high speed steel 6542, with high hardness, toughness, strength and wear resistance. The black oxide treatment increases hardness, rust resistance and abrasion resistance. Sharp spiral grooves guarantee fast, clean and smooth cuts. The spiral groove simplifies the removal of metal chips, saving time and effort in operation.


Useful Notes:

--- Stay calm and handle it carefully. When using a hand drill, pay attention to the adjustment of the speed. A speed of 100-1000 rpm is recommended. When used correctly, the life of twist drill bits is significantly extended. When drilling metal with high hardness, the speed should be slower than normal drilling. If you have any problems with chip removal, go back in time and remove the chips.