Different Sizes: These bits are available in 6 different diameter sizes: 6mm, 8mm, 9mm, 12mm, 16mm, 19mm. Use: Ideal for countersinking fixing holes in wood or plastic. Material: Made of high-speed steel coated with ultra-resistant titanium, these cutters perform well even in the hardest materials. Quick change: With 64 mm hexagonal shanks for rapid loading. Won't slip in chucks. Bonus: 1 free automatic needle punch. Mark a dimple in the material to be worked to create a starting point that will prevent your screws and drill bits from moving. Characteristics: Material: High speed steel. Dimensions: 6 mm, 8 mm, 9 mm, 12 mm, 16 mm, 19 mm Quantity: 1 set of 6 drill bits Length: 48 mm Contents of the box 39;packaging: 1 drill bit of 6 mm 1 drill bit of 8 mm 1 drill bit of 9 mm 1 drill bit of 12 mm 1 drill bit of 16 mm br/> 1 19 mm drill bit. 1 automatic punch. LRFR is committed to providing each customer with the highest possible quality of customer service.