Seller notes

BLOWN CHEVY SBC / BBC CRANK HUB KEY UPGRADE C-1035 steel 3/16 x 3/4 Woodruff Key designed to be installed deep into shafts these keys can withstand great strain, these keys are a huge strength improvement over stock keys, and are a direct replacement and a great upgrade for your SBC or BBC blower’s drive! Go with 2 if your timing set hasn't been installed yet SAE Rating: 9 Tensil strength: 72,000 psi Material: C-1035 Steel Finish: Plain Rockwell hardness: B90 Length tolerance: +0.000 to -0.010...

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