Cheston 8pc Bits Set I 2 Wall, 2 Wood 2 Metal 2 Screwdriver Bits I Universal Bits for 10mm & 13mm Drills I for Wall Concrete Wood Metal Aluminium Compatible with Bosch, Black Decker, Ibell IN THE BOX: 2 Masonry drill bits (Length 3", Dia 6mm,8mm) for drilling on Wall. 2 HSS drill bits (Length 3", Dia 6mm,8mm) for drilling on Metal, Wood & Plastic. 2 Wood drill bits (Length 3", Dia 6mm,8mm) for drilling on Wood. 2 Screwdriver Bits (Dia 6.3mm) MATERIAL: HIGH SPEED STEEL. Quenched for durability, titanium surface coating Specialty Woodworking Bits, Masonry Bits, Auger Drill Bits Set. Suitable For: Wood, Wall, Metal, Alluminium, Plastic, Concrete HIGH QUALITY shoulder cutters with precise edges that produce tear-free holes. SCREWDRIVER BITS: Doublesided ph Screwdriver Bit have Perfect Magnetic Holding Strength that Reduces Slips for Drill Rotary Hammer. 1/4 inch quick-change shank fits drill chucks, impact drivers, adapters,extensions and bit holders.