1" ID x 1-1/2" OD spacers are made from 6061 billet aluminum bar stock with a mechanical finish, designed for ball bearing wheels.
Custom applications
3/4" ID AXLE SPACERS
3/4" ID x 1-1/8" OD spacers are made from 12L15 alloy steel and flash chrome-plated, designed for 3/4" Timken and ball bearing wheels with a hard-coat finish, so they can be used as wheel seal adaptors.