TEMO 50 pc 1/4 inch (6.5mm) Flat Impact Ready 1 inch (25mm) Length Slotted Screwdriver Insert Bit Hex Shank with quick release slot 50 pc Flat Slotted 1/4" (6.35mm) Screwdriver Insert Bits in a storage box. All bits are 1" (25.4mm) Long with 1/4" (6.35mm) Shank Industrial quality with quick release slot Made of S2 steel for maximum durability. Bits are impact ready. Suitable for both hand tool and electric tool