Stayer Set of 19 drill bits

Stayer Set of 19 drill bits: • Helical HSS-Co made from high quality super fast steel alloyed with 5% Cobalt , DIN 338, rectified, right cutting, Type N, Cylindrical shank. • Sharppened bit tip with a 135° attack angle, improved drilling on hard materials increasing the drilling speed over beveled edge bits. Sharpened in accordance to DIN 1412 C. • Split Point to avoid bit sliding while improving drilling quality. • Milled bit for an optimal precission. • Tensile strength < 1200 N/mm². • Double spiral groove for an optimal debris extraction. • Long lifespan: Cobalt alloy significantly improves heat and wear resistances. APPLICATIONS Specially suited for stainless steel drilling, alloyed and non alloyed steels with a tensile strength up to 1200 N/mm², grey casting and steel casting. USE Use with a bench drill, not sutiable for hand drills due to the bits hardness.