"Choose your blade for cleaning, slotting and cutting of all types of metal and masonry. Wheel Thickness in. 1/16, Recommended Use Metal, masonry, Max. RPM 15,280, Wheel Type Right angle, Wheels qty. 1, Wheel Diameter in. 4, Arbor Size in. 5/8. Cut pipe, sheet metal and auto body panels, studs, angle iron and tubing Unique reinforced design for strength 1/16in. for quick, clean cutting 4in. blades for Black & Decker, Hitachi, Jepson, Makita and Ryobi right angle grinders"