Compatible With Comet 300668A, Comet 300668C Fits Comet 500 858 Series Length: 45.91″ O.C. Width: .920″ Top Width Symmetrical Product Description 300668 Comet Cogged Go Kart Belt For 500 858 Series; Compatible With Comet 300668A, Comet 300668C .92″ top width symmetrical belt for Comet 500 858 series units. Belt marked 704129. Use with 500 series driven with 15″ center to center distance. Use with 858 series driven with 14″ center to center distance. Length: 45.91″ O.C. Width: .920″ Top Width Symmetrical