This is a tap socket. It is a #6. It is 3/8 in. Size etched on socket. Durable and made to last. Black oxide finish. Made of steel.
Lisle 70620 #6 Tap Socket
Lisle 70600 #5 Tap Socket for 5/16, 7/16in & 7 & 8mm Taps
Lisle 70660 #8 Tap Socket for 1/8" Taps
Lisle 25000 6 Piece Rear Disc Brake Caliper Tool
