... Idler,Garland Idler,Trough Idler,vee idler,Impact roller,Taper roller,Comb roller,Sprial roller MaterialCarbon Steel,Stainless steel,Plastic,Nylon,Rubber, ... industry, etc--------------------------------------------------------------------------------------------------------Basic Parameter:Inner structure in Table:Roller inner structure and material:Tubecarbon Steel,stainless steelShaftbright drawn ...