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 on metal, plastic, fiberglass, composites, rubber, glass and stone Industrial-rated for tough production performance Product Description Standard arm on model 14000. From the Manufacturer The Dynabrade Difference: Dedicated to exceeding the expectations of customers, through the innovative design of the highest quality abrasive power tools. MADE IN USA proudly displayed on every pneumatic tool package. Top research and development team dedicated to innovation and improvement. Comprehensive in-house staff of industrial engineers. Unmatched customer service department offering personal, professional service. Global sales team of abrasive power tool EXPERTS, dedicated to providing solutions. Complete service and repair program handled by trained pneumatic tool technicians. Unmatched market