Dynabrade: 11218 Contact Arm Assembly 11218 Contact Arm Assembly, 5/8-Inch Diameter by 3/8-Inch W, Rubber Wheel with 1/2-Inch W Platen; For 1/2-Inch W by 24-Inch L Belts. Standard arm on Dynafile Model 14000 Superior belt tracking For use o…View more