Park Tool Snap Ring Pliers. Professional quality ring plier made from forged, heat-treated chromoly steel with a return spring and vinyl dipped grips.Professional quality snap ring plier set for various internal and external bike fixturesForged heat treated chromoly with return spring and vinyl coated gripsRP-1: .9mm straight internal. Opens from 22mm down to 0 (tips touching)RP-2: 1.3mm bent internal. Opens from 22mm down to 2mm (center to center)RP-3: 1.3mm bent external. Opens from 2mm (center to center) up to 18mmRP-4: 1.7mm bent internal. Opens from 21mm down to 2mm (center to center)RP-5: 1.7mm straight internal; Opens from 25mm down to 0 (tips touching) Park Tool Snap Ring Pliers Snap Ring Plier UPC: 763477005991