TBS 8-71 polished alum. competition blower. This blower has all teflon stripping to insure maximum efficiency on your engine. The rotors are cast or billet and hard anodized for a long lasting supercharger and a tighter inside tolerance creating a more efficient supercharger. The blower uses double lipped teflon seals to provide superior seal and uses billet rear bearing plate,front bearing plate, and billet front gear cover for maximum strength and gives a superior polish. A bug or bird catcher injector can bolt to the top of the blower. This blower case is made from forged alum. to give maximum case strength and the best polish job on the market.