Bend pulleys, 4.5/6 inch design: return belt driven pulley provides rotation for shaft-driven speed sensors. Available in 4.5 inch or 6 inch diameter. Size: 4,5 inches diameter, self cleaning Belt width / A dimension: 30″ / A= 35.6 … 41.5″ (902 … 1 054 mm) Finish: 316 (1.4401) stainless steel Bearings: Imperial size .