RCSTR6X3 Ground Glider Caster with Brake 6" x 3" (2-Pack for R14G & R16RT)The specially crafted Rock N Roller RCSTR6X3 R Trac Wide wheels boast low profile no flat tires, robust polymer hubs that are both lightweight and durable, and minimal rolling resistance. They offer pneumatic like cushioning and significantly wider load dispersion over soft terrain, all while sporting an eye catching racing style appearance. With dimensions of 6 x 3, these brake casters are 50% wider than standard casters, allowing them to