... size: 20mm We can design and manufacture all kinds of conveyor rollers, such as gravity roller (free rollers), drive rollers, tapered ... rollers, grooved rollers, single or double sprocket roller, accumulated rollers, idler roller, powered rollers. From different ... plated steelBearing:Precision BearingShaft dia 15mmTube Length: 1010mm Heavy duty Conveyor Rollers