4" x .250 Extended Performance Tuck Point Blade The DeWalt 4" x .250 extended performance tuck point blade 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: Extended performance diamond matrix provides 350x"s the life of conventional abrasives and enhanced material cutting Segmented rim blades are laser welded with heat treated steel bodies which provides increases durability and long life Large diamond segments with cobalt is ideal for use across various product applications Specifications: Diameter: 4" Edge Thickness: .250" Segment Height: 8 mm Arbor Size: 5/8, 7/8, 20mm" Application: Tuck Pointing Max rpm: 15200 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.