Premium Cut off Wheels 4 1/2 x 1/8 x 7/8-10 Pack for cutting all Ferrous Metal and Stainless Steel Designed for use with most right angle electric and pnuematic grinders Premium thin 1/8" wheel profile for fast, burr free cutting thru thicker metal Rugged flat center steel reinforced 7/8" arbor The Cut Off Wheel is Constructed of 2 bonded sheets of fiberglass mesh for durability and safety Features aluminum oxide abrasive composition for quick and accurate cuts