Wera 05028160001 392 kraftform plus flexi shaft bit holding screwdriver 1 4 hex wera 05028160001 this handheld bitholder from wera has a flexible 177mm blade with a 98mm multi component non roll kraftform handle and quick release chuck and is suitable for use with hex bits wera 05028160001 392 kraftform flexi shaft bit holding screwdriver 1 4 hex