ITEM NAME:15Pcs High Speed Steel HSS-Co M35 Cobalt Drill Bit Set 1.5-10MM Steel Pounch BX Specification: Brand new Material: HSS-Co 5% M35 Cobalt Color: as picture shows Size: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 10mm Quantity: 15pcs per set HSS-Co Drill Bit Set for High Tensile Steels such as Stainless Steel Alloyed with 5% Cobalt to improve heat resistance which will perform and outlast normal HSS bits particularly if your work involves drilling tough metals Handheld and Stationary Use (In Drill Press) 135 Degree Split Point Tip Package included:15pcs x drill bits.Quantity: 15pcs per set. Material: HSS-Co 5% M35 Cobalt. Size: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 10mm. HSS-Co Drill Bit Set for High Tensile Steels such as Stainless Steel.