EAN: 3165140666459

TRINBOR 4-12MM 9TRIN HSS-ALTIN

The step drill bit head is made of HSS (high-speed steel) and coated with AlTiN (aluminum
titanium nitride). This provides the longest possible lifespan and does not require the use of
coolant. Laser-marked numbers in both spiral flutes provide highly visible and durable marking
of the hole diameter. In addition  the 3-flat shank prevents slipping in the drill chuck and
provides efficient transmission with high torque. The HSS step drill bit head delivers smooth 
burr-free drilling in multiple diameters with a single drill bit. It is ideal for deburring 
drilling round holes  and enlarging existing ones. It is not necessary to mark center points
because the two-part tip provides easy starting. Its CNC-ground spiral flute allows for
optimized chip removal and less vibration for smooth drilling. The most optimal cutting and
absolute smoothness are ensured thanks to axial and radial clearance grinding. This step drill
bit is suitable for use on thin materials such as non-ferrous metals  sheet plastic  sheet
steel  plastic  and stainless steel. 9 steps Ø 4-5-6-7-8-9-10-11-12 mm

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