The product is a vintage Chevrolet crankshaft 3-groove pulley with part number 3972180CE. It is made in the United States and is specifically designed for GM 1969-1975 Chevy vehicles. This pulley is a genuine Chevrolet part. Small Block Chevy with ac. 307, 327, 350. 3 inch deep. Sandblasted and painted rustoleum gloss black.