General description This Draper Expert Schröder SDS+ Shank Magnetic Bit Holder is designed for expert quality performance. It features a durable stainless steel construction and is compatible with 6.35mm (1/4") hexagon insert bits, adhering to ISO1173 standards. Technical specifications Shank type: SDS+ Material: Chrome vanadium and stainless steel Hexagon insert bit size: 6.35mm (1/4") Other information Packed in polybag This is a Draper product.