CenturionPro HP Bucker Spur Gear 25 Teeth 4.25 OD No CollarSpur Gear 25 Teeth 4. 25 OD No Collar for CenturionPro HP1, HP3 & HPM If you require a replacement Spur Gear 25 Teeth 4. 25 OD No Collar for your machine, you have come to the right spot. This Spur Gear 25 Teeth 4. 25 OD No Collar is suitable for all CenturionPro HP1, HP3 & HPM CenturionPro Solutions has a mandate of producing quality machines however, even the best components can wear down. In addition, our replacement parts are easy to install and