RockNRoller. Replacement Part. Hal Leonard #RCSTR6X3. Published by Hal Leonard (HL.1427807).
UPC: 672485350828. 7.75x13.0x5.25 inches.
The pack of two 6 x 3? Ground Glider Caster with Brake from Rock-N-Roller MultiCart is a replacement caster system with nuts and lock washers for the R14G and R16RT utility carts.