4-1/2" Paper Backing Pad with 5/8"-11 Arbor The DeWalt 4-1/2" paper backing pad with 5/8"-11 arbor is an extremely durable and useful attachment. Use this to increase your efficiency and decrease your work time. Superior build quality means you will be using this bit for years with minimal wear and tear. A must have for any professional or do-it-yourselfer. Features: High quality raw materials for consistent performance Turbo rubber backing pads have spiral vents to keep disc cool and increase disc life Specifications: Diameter: 4-1/2" Arbor Size: 5/8-11" Material Type: Paper Max rpm: 16000 DEWALT is firmly committed to being the best in the business, and this commitment to being number one extends to everything they do, from product design and engineering to manufacturing and service.