Craftsman 21 mm X 3/8 in. This allows for the user to reach those hard to reach fasteners and torque without the fear of stripping a bolt. Manufacturer: CRAFTSMAN. INCREASED ACCESSIBILITY: Deep Socket.

MPN: CMMT99144
Brand: CRAFTSMAN
Style: FASTENER_DRIVE_BIT
Size: ["21 MM"]
Color: Full Polish
Size Type: Regular
UPC: 885911587280