light duty caster wheel 1.wheel size:3",4",5" 2.wheel material:PA.PP.TPE on PP, PVC on PA,PU onPP 3.roller stem:1/2*13, 1/8*16 4.load capacity:65kg-90kg 5.finish:white zinc 6.fork thickness:2.3mm 7.with axle side break or not Roller stem type can be choosed by customer