6-71 to 14-71 12Pt 2.75" Aluminum Blower Supercharger Break Away Stud Kit The Speedmaster blocks are cast

The Speedmaster blocks are cast from high-density iron with extra-thick cylinder walls and decks

They feature a sleek chrome finish with an aluminum housing and have a 90 amp capacity

These canisters are made from high-quality materials to ensure optimum performance

leak-free seal and requires no additional sealants

6-71 to 14-71 12Pt 2.75" Aluminum Blower Supercharger Break Away Stud Kit The Speedmaster blocks are castSpeedmaster 7 16" red anodized aluminum studs allow your blower and manifold to separate during a blower explosion to minimize engine damage. These kits also include 12 point, aerospace quality 12pt nuts, ground hardened washers.