RS PRO Drill Bit Set, HSS, 170 Pieces

Drill bits, 10 pieces of each size - 1 to 8 mm (0.5 mm increments) and 5 pieces of each size - 8.5 to 10 mm (0.5 mm increments). RS PRO 170-piece HSS Drill Bit Set. From RS PRO, this outstanding drill bit set is made from HSS for high performance and is more durable than high carbon steel bits.
This excellent set includes the most commonly used diameters from 1 to 10 mm in 0.5 mm increments.
This high speed steel (HSS) drill bit is manufactured from a single piece of high speed steel, reducing breakage and crushing caused by heat and stress.
Manufactured to DIN 338 for high precision tolerances and geometric accuracy.
Typical Applications: HSS bits have a partially ground tip and are suitable for cutting non-ferrous metals such as aluminum, copper, brass, zinc, and iron.
It can also be used for drilling plastic, wood, stone, etc., but performance will be affected.
Features and Benefits. 170-piece HSS drill bit set Polished flutes for longer life than comparable rolled forged bits Shaft equal to drill diameter reduces breakage Black oxide finish for quick material removal Faster cutting and longer life than regular high carbon steel bits. Frequently Asked Questions. Q. What does jobber mean? A. The word jobber refers to the length of a drill bit.
This generally means that the overall length of the drill bit itself is very long relative to its diameter.
For example, mechanical drill bits have very short flute lengths, which means that their overall length is also significantly shorter.
Q.What is HSS? A.HSS (short for High Speed Steel) is a standard steel for drill bits because of its excellent heat resistance when operating at high speeds.
A typical drill can spin at up to 500-700 rpm, which creates a significant amount of heat buildup due to friction.
This is undesirable when working with wood or plastic.