Manic Mechanic Sprocket Adapter Assembly (56 Tooth Sprocket, 5/6/7 Speed Adapter (1.000")) These CNC machined sprockets and adapters are perfect for motorized bike builds that want a stronger hold than the rubber gaskets provided with kits Great for choppers and wheels with wide diameters that need a little more space between the chain and the tire to avoid chain bite (when the chain rubs against the tire) 5,6,7 Speed Adapters: 1.25" Diameter; Standard Large Adapter: 1.5" Diameter; OCC Chopper Adapter: 1.18" Diameter; Modus Adapter: 1.45" Diameter; Nexus 3 Speed Adapter: 1.85" Diameter Sprocket benefits vary by size. Smaller sprockets like the 36 Tooth Sprocket get great top-end speed. Medium range sprockets like the 44 and 48 Tooth Sprockets are considered all terrain sprockets; Large sprockets like the 56, 62, and 66 Tooth Sprockets are great for bottom-end torque Made in the USA