Bader wheels include shaft and bearings for all sizes between 1/2" and 5". Wheels come in either plain or face serrated. Wheels 1/2" and 5/8" dia. are not available in a serrated face. Wheels 1/2" through 3" dia. should not be run at speeds in excess of 3000 SFPM. Wheels 1/2" to 5" in diameter are 2" wide.