Check the listing for details. Bobcat 444 500 600 610 Variable Speed Rebuilt Kit with O-rings. Listed at 90.00 USD. All the parts to rebuild the driven sheave. This is the kit you need if your 3 pins are good. It comes with the o-rings for the 610 black swivel head variable sheave. There is an 1 more large o-ring in case you nick one.