Grizzly H5877 Heavy-Duty Jack Screw Set 1" total screw travel; 2-3/8" minimum length; maximum body diameter is 1-1/4" Easily fits into tight locations; for leveling and adjusting heavy machinery Eight-piece set includes body, pivoting screw pad, conical screw point, 2" body extension, 1" body extension, Vee cap, knife edge cap and wrench