This is the cycle cam wheel tire for the RCA RP-190 record changer which is used on most all of the later RCA 45 record changers.If your cam wheel looks like the one shown, it really needs to be replaced. Even if the cam wheel tire doesn’t look like the one shown, if it is hard or slick, it may cause cycling problems.This tire works on the 45EY3, 45J2, 9Y510, 15E,45EY26,45EY4, 9Y511,45HY4, 4Y511,6EY1, 6EY15, 6EY2, 6EY3A,B AND C, 6JY1, 6JY1A,B,C.I now own Willie Boscos jigs and special tire extrusions and ship with full instructions on how to rebuild you cam tire for pennies of what it would cost to send in for a rebuild.