The park tool rp 4 17mm snap ring pliers are professional quality ring pliers made from forged heat treated cro moly steel with a return spring and vinyl dipped grips the rp 4 has 17mm tips on bent nose blades for larger internal snap rings the tips open from 21mm down to 2mm center to center park tool rp 4 17mm snap ring pliers features a bespoke pair of snap ring or circlip pliers designed to work with the fittings found on suspension and hydraulic systems forg