6 x 2 Mold on Poly wheel
6 x 2 Moldon Poly Urethane wheel 1-3/16 plain bore
6 x 1 - 1/2 3/4 PBB Solid cushion wheel (Duraflex)
6 x 2 Mono-Pheumatic wheel 1/2 FBB
6 x 1-1/2 Urethane wheel 3/4 RB
6 x 1-1/2 Urethane wheel 1-3/16 plain bore