4 Replacement rubber gear spare parts for Nutribullet You will get 4 Rubber Base Gear This base gear is for all models of Nutribullet Pro and Nutribullet Classic model. Tested for both pro and classic models. 100% money back guaranteed without any questions, and no re-stocking fee. How to change Top Base Gear? How to change Top Base Gear? 1.All Rubber gear in Nutribullet bullet are reverse threaded. 1) You need to use your screw driver as fixed and turn the pier or vise anti-clock wise (if you hold the screw driver on the right hand) . 3.(How to change? Video creation in Progress) 1) A long flat screw driver (not the star head) 2) A flat-nose plier or vise, Thick Cloth, Mineral oil for lubrication. Any Questions! Message us using ebay messaging system. We are glad to support you. If your are not satisfied, 100% money back guaranteed! Please give us 5 star rating This Rubber gear for all models of Nutribullet Pro and Nutribullet Classic models.