20 Piece Standard and Deep Socket Set, 3 8 in Drive, 12 Point ORS NASCO Excellent for Thread fittings High temperature Excellent for Thread fittings High temperature Made from carbon steel in right hand configuration only These taps are especially suited for restricted area work All taps have taper of 3 4 inch per foot Marked with drill size for pilot hole thumb operated reverse switch mechanism Stanley® sockets feature the Maxi Drive™ design with unique radius corner design which provides 15% more torque Sockets and extensions remain locked onto drive until disengaged with easy to reach Each ratchet handle is ergonomically designed with easy to use