Ampro T45970 1/4-Inch Drive Fits-All Go-Thru Socket Set, SAE and Metric Standard and Deep, 29-Piece Chrome vanadium steel for superior performance and durability 29-piece set Replaces all standard and specialized sockets: SAE, Metric, Square, 6-point star, 12-point splined and 8-point tuner nut Go-Thru design allows long studs to protrude through the socket, eliminating the need for deep dish sockets Great for the home user or professional mechanic