2" low center nylon fixed castor 1.Wheel size:50*40mm 2.Wheel material:nylon 3.Type:fixed castor 2" low center nylon fixed castro1.Housing:made of pressed steel,fixed sturcture,zinc plated,wheel axle with nut.2.Dimensions:Wheel material:nylonWheel size:50*40mmOverall height:74mmLoad capacity:150kgTop plate size:95*66mmSetting ptich:78*45mmMounting hols size:11.5*8.5mmTop plate thickness:3. ...