"2 x 7/8 ICE WHEEL 1/4"" precision bearing"
2 x 7/8 Urethane wheel 3/8 Id metal bushing
"Grey hard rubber wheel, 2 x 1 x 1/4 inch plain bore"
Black soft rubber wheel 2 x 1 x 1/4 inch plain bore
2 x 15/16 inch sintered iron (semi-steel) wheel