fits 8" pocket bike wheels with the 6 bolt hub pattern.-3/16" heavy dutypocket bike 6 bolt Split Sprocket Adapter 8"$42.00PriceWITH ROTOR*SelectQuantity*Add to CartPRODUCT INFOPlasma Cut from 3/16 cold rolled steel, this is a split sprocket adapter for an 8" 6 bolt pocket bike wheel. you can run any 6 hole split sprocket with the adapter.