... 2.Load capacity:70~90kg 3.Hard rubber caster, other fittings are available 4.Good quality ... diameter: 75mm,100mm, 125mm3.Caster material: Hard rubber with delrin bearing,pressed steel,zinc plated,double ... wheel diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic ... Product4. Factory 65 American type hard rubber top brake nylon pedal locking wheel casters