General description Sealey HSS Cobalt Fully Ground Drill Bit Assortment includes 170 pieces ranging from 1mm to 10mm in 0.5mm increments. These drill bits are fully ground and manufactured to DIN 338 standards, featuring 5% cobalt for enhanced heat hardness, which extends the life of the bits. The 135° split point design is self-centering, reducing thrust and facilitating easier penetration, making them suitable for drilling high carbon steel and stainless steel. The assortment is supplied in a tough composite storage case. Technical specifications Model No.: DBS170CB Sizes: 1mm to 10mm in 0.5mm increments Material: HSS Cobalt with 5% Cobalt Manufactured to: DIN 338 Other information