S.S. scroll Roller has high strength and thin thickness as it has a low moment of inertia and low runout values thus preferred. 2 start /4 start 8 start  available here 

3500 mm in length and 60 mm – 200 mm diameter with 2 to 4 mm wall thickness range as standard and custom sizes according to the demands of our customers, live-shaft or dead- shaft rollers can be produced with radial runout tolerance up to 0.5 mm.