Fits most M6 ( T30 )  / M8  ( T40 ) screws.  Anodized aluminum body with German made stainless steel Torx bit. This is a light duty tool designed to hold up to saltwater exposure. The compact design (approximately 3-1/8” long) fits nicely in a pocket. There is a small hole to attach a lanyard or floater. The bit is not designed to be removed and is not interchangeable.