7-Piece Jumbo Socket Set This 7-piece 1 inch socket set includes SAE sizes : 3”, 3-1/8”, 3-1/4”, 3-3/8”, 3-1/2”, 3-3/4”, and 4”. covering axle and spindle nuts on trucks, trailers, and heavy machines. Built for high-torque impact wrenches, it's the go-to choice for pros who need serious socket power.