Singer 401 Slant-O-Matic 500 Rocketeer Sewing Machine Cam Stack Simanco 172115

Singer sewing machine cam stack, compatible with the 401 / 401A Slant-O-Matic and the 500 / 500A Rocketeer. Very nice vintage condition, clean and rust free. *Top stud and spring not included. Genuine, original Simanco part #172115.