Cheston 5pc Wood Drill Bits I Brad Point I 4mm, 5mm, 6mm, 8mm, 10mm I Universal Bits fits all Drills for rotary/drill drivers I Best for Woodwork Compatible with Bosch, Black Decker, Ibell Drill Cheston 5pc Wood Drill Bits I Brad Point I 4mm, 5mm, 6mm, 8mm, 10mm I Universal Bits fits all Drills for rotary/ drill drivers I Best for Woodwork DIAMETER: 4mm, 5mm, 6mm, 8mm, 10mm. Type - Specialty Woodworking Bits SUITABLE FOR: Wood, Hard/solid wood Softwood Acoustic panels. This type of bits can be used for furniture making, cabinetry and general woodworking. WOOD BITS have a round shank centers a bit in the chuck more accurately. Extremely sharp drill bit with a centring tip allows for exact positioning of the hole HIGH QUALITY shoulder cutters with precise edges that produce tear-free holes.