the 10B K2 attachment has a bent tab on both sides with two holes each for mounting
and precision sprocket with 21 hardened teeth that is manufactured to accept a E bushing
06B21H sprockets with a stock bore comes with the standard 12 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes
and precision 40 tooth sprocket that is manufactured to accept a R1 bushing
100A40 Sprocket Dimensions
10C140J Sheave ten-groove 14.40" OD 20mm Stock Bore the 10B K2 attachment hasThis 10C140J Sheave uses a J QD bushing, is directly interchangeable with other manufacturers, is 14. 40" in diameter, and is manufactured in accordance with ARPM Standard for safe operation. With C series QD sheaves you can use C, CX cogged, CC double angled, and C banded v belts. What separates this 10C140J sheave from the others is that it is made using a high strength cast iron, is phosphate coated, painted, and balanced at the factory. Using the