RUKO 101051TH Step drill bit 4 - 20 mm HSS Total length 81 mm TiN 1 pc(s)
Size No. 1. Drilling range 4.0 - 20.0 mm.NEXT GENERATION - With this robust tool, sheets can be centered, drilled, drilled and deburred in one operation.The deep-ground and spiral-shaped clamping groove offers absolute smoothness and high cutting performance. In particular, chips that do not break are cleanly transported away as with a twist drill. This reduces the formation of surface-mounted cutting edges and cold welding on the cutting edges. The cone makes it easier to pull back on pierced sheets. HSS: High-performance high-speed working steel for drilling in well-machined materials with a strength of up to 900 N/mm². Tin: The titanium nitrite coating is a universal standard layer. It offers a 300-400% longer service life compared to uncoated tools. Cooling is recommended.This text is machine translated.