1/4" MINI RATCHET WRENCH BIT 72TEETH SCREWDRIVER TOOL Size: 1/4 (6.35mm) total length of about 85mm Square hole diameter: 6.35mm Head thickness: 19mm Head width: 18mm 72-tooth two-way adjustable, easy to work in tight spaces, strong applicability; 1/4" (6.35mm) square head, can be used with a variety of accessories, such as with extension rods, with conversion sleeve, with batch Head buckle