* Designed and built with the specific needs of the bike mechanic in mind* Pliers are made from forged, heat treated Cr-Mo steel with a return spring and vinyl dipped grips* The RP-SET.2 includes 5 professional quality pliers. 4 for internal snap rings and one for external snap rings :* RP-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 18mm* RP-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)