A tap socket set combining 1/4"D & 3/8"D sockets, for driving thread cutting taps from M1.5 to M14.Sockets have special square profile to fit the tap shanks, magnets achieve better holding force.For use with 3/8"D & 1/4"D ratchets, ideal for restricted access where a T handle tap holder will not reach.Product DetailMaterial: MetalType: Tap Socket SetSpecific uses for product: Ideal for restricted access where T-handle tap holders will not reach.Color: BlackContents:6pcs 1/4" drive magnetic sockets(length:32mm)- socket number to square size:#1 (2.8mm), #2 (3.4mm), #3 (4mm), #3.5 (4.5mm), #4 (4.6mm), #4.5 (5.4mm);4pcs 3/8" drive magnetic sockets(length:40mm)- socket number to square size:#5 (6.4mm), #6 (7.3mm), #7 (7mm), #8 (8.4mm)Features:For driving thread cutting taps from M1.5 to M14.Sockets have a square recess and magnets to hold tap shanks.For use with 1/4in.Dr and 3/8in.Dr ratchets.Ideal for restricted access where T-handle tap holders will not reach.