AZ-1144 all aluminum beautifully ball burnished for sparkle. Has bead biting edges and pips to prevent tire and tube slippage, the split rim design allows low cost and simple tire change. 3 bolt pattern, 1-3/8″ od, 5/8″ id precision ball bearing. Weight 2 bl 7-1/2 oz. Includes nuts and bolts used to mount drum.