R-Trac Caster Wheel 2-Pack, 8" x 2" (Pair of wheels for R12), Symmetrical Hub by Rock-n-Roller Multi-Cart$49.98
R-Trac Rear Wheel 2-Pack, 10" x 3" No-Flat (Pair of wheels for R10, R11G, R12 & R18), Offset Hub by Rock-n-Roller Multi-Cart$64.98
Stealth R-Trac Rear Wheel 2-Pack, 10" x 3" No-Flat (Pair of wheels for R12), Offset Hub by Rock-n-Roller Multi-Cart$64.98