For grip wrenches using single-lead thread adjusting screw. Adapter threads onto a slide hammer with a 5/8 inch -18 thread. Includes: number 205378 - grip wrench threads onto a 7/16 inch - 14 end of adapter for pulling use, number 557479 - grip wrench threads onto a 5/16 inch - 18 end of adapter for pulling use, number 557480 - grip wrench threads onto a 1/4 inch - 20 end of adapter for pulling use.