Wera 893/4/1 K Universal Bit Holder is designed with a strong magnet for a secure hold. Bit holder features a stainless steel sleeve. Suitable for use in power tools with DIN 3126-C6.3. Partner with Wera series 1 insert bits for optimal performance. Universal Bit holder dimensions: 1/4” hex drive, 2-inch length. Wera – The Best Tools For The Job!