Steel erectors and fabricators use Ajax Riggers Tools to align bolt holes in steel beams and plate. Ajax High Quality American Made Drift Pins are made in many varities such as Single End, Double Barrel, Long Taper, Pull, Welding, Button Head, and Broad Head. Ajax Drift Pins are forged using High Grade American Made Carbon Steel. Note: Drift Pins are 1/16" larger than the bolt or hole. For example, a 13/16 diameter pin should be used for 3/4" bolt or hole. Special Styles and Sizes are available upon request.