Allstar Performance 45 Degree Adapter Fitting -12 AN Male to 1/2 in NPT Male - Black 13-RS1-B-M 11-5/8" vented rotor is

11-5/8" vented rotor is

Reduces the force through the head on the Z axis to 53G’s in a 70G impact

1 in OD Tube

Low lateral impact

1972-1974 Chevrolet Bel Air

Allstar Performance 45 Degree Adapter Fitting -12 AN Male to 1/2 in NPT Male - Black 13-RS1-B-M 11-5/8" vented rotor isAdapter Fitting 12AN To 1 2"NPT Aluminum 45 Degree Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available from Allstar Performance. Product Description: Adapter 45 Degree 12 AN Male to 1 2 in NPT Male Aluminum