Spindle Nut Socket Tool Kit 6pc 1/2” Drive Axle Lock Nut Socket Set. Specification: This spindle nut socket set has 6 different sizes of spindle socekts, which include 2-3/4" x 4 lug outer spindle nut socket, 2-3/8" x 4 lug outer spindle nut socket, 2-1/4" x 4 lug Inner spindle nut socket, 2-5/8" x 6 lug outer spindle nut socket, 4-Pin hub locknut socket, 4WD front spindle puller.