For grip wrenches using single-lead thread adjusting screw. Adapter threads onto a slide hammer with a 5/8"�18 thread.No. 205378 � Grip wrench threads onto a 7/16"�14 end of adapter for pulling use.No. 557479 � Grip wrench threads onto a 5/16"�18 end of adapter for pulling use.No. 557480 � Grip wrench threads onto a 1/4"�20 end of adapter for pulling use.