1.Diameter:50-219mm . 2.Length:150-3500mm . 3.Material: Iron,stainless, Rubber,Nylon, HDPE 4.shafts diameter from 20 to 50mm Idler&rollerWe can supply all kinds of idler.Idler type:DTII,DX,TR,DTL,TD75 and so on. Idler dia:50,60,63.5,76,89,102,108,114,127,133,159,165,194,219 etc.Carring idler,return idler,impact idler,centring idler,spiral idler,comb sharp clean idler,taper shaped idler,steel ...