RockNRoller RWHLS8X2BK 8×2 R-Trac Symmetrical Wheel, for R12 Caster, 2-Pack, Black Hub

8″ x 2″ symmetrical R-Trac no-flat wheels combine advantages of pneumatic and solid wheels. 30% lighter than pneumatic wheels and features soft cushion ride, low rolling resistance, high-strength polymer hub, and no flat tire. Fits R12 caster. Wheels only; does not include the caster assembly.