The Polisher Backing Plate for rotary works with 5/8" thread, made of durable Polyurethane material and built with Smart Heat Management for heat dissipation, pressure resistance, and flexibility. You can choose your specific plate size from 2" to 6" plate to meet your rotary polisher size requirement. The plate utilizes Smart Heat Management technology with vertical and horizontal venting along with a center recess to reduce heat buildup, ensuring smooth contouring and prolonging the overall life of each plate