Equalizer Bushing kit Trailer fitting Universal components A2994 Reyco SK83-31000 number on rubber bushing TRB5066 size of each rubber bushing 4 7/16 inch length x 3 1/8 inch outer diatmeter x 1 1/2 inch inner diameter. other reference 21B trailer PLEASE CHECK THIS OUT WE DO NOT KNOW IF THESE NUMBERS ARE CORRECT Total length of shaft 12 inches 6kg in weight