RocknRoller RCSTR4X1 4 Inch G-force Caster with Brake for R2/R6 - 2 Pack - Yellow Hub RCSTR4X1
RocknRoller's RCSTR4X1 are replacement casters with brake for cart models R2 and R6. 4" x 1" yellow caster with brake. Polymer hub bonded to soft TPR tread. Sold as a set of 2 caster wheels with nuts and lock washers.