Thread Repair Tap Socket Set Holder Square Sockets 1/4 & 3/8 Drive 1.5mm - 12mm
Sockets have special square profile to fit the tap shanks. 6 x 1/4" drive magnetic sockets: socket number to square size: #1 (2.8mm), #2 (3.4mm), #3 (4mm), #3.5 (4.5mm), #4 (4.6mm), #4.5 (5.4mm); length: 32mm.