Description Patented No Slip Drive Sprockets™ from Wahl Bros. Racing. Designed specifically to prevent ratcheting and for less rotating mass, the No-Slip Sprockets drive off of four track lugs and track windows at once with one pair. Eliminate those extra involutes with these drive wheels. If rail tips need to be shortened for clearance, an anti-stab wheel kit is recommended to prevent spearing. Not intended for closed window tracks. Sold individually. 7 Tooth = 5.50″ Diameter 8 Tooth = 6.25″ Diameter 9 Tooth = 7.05″ Diameter 10 Tooth = 7.85″ Diameter
