This is a set of five vintage antique wheel weights (0.5, 1.0, 1.5, 2.0, 2.5) made by the Perfect Equipment Company. They were manufactured from 1939 to 1978 and are NCRS correct for many pre-1978 Corvettes. The following information is from an article written by Gary Beaupre' in 2004: "Perfect Equipment weights can be identified by the slanted