Product Overview The EXTREME METAL cut-off discs feature diamond technology for extreme durability and maximum work efficiency. They deliver 1,000+ cuts which is 30 times longer than thin bonded cut-off wheels. Size 125 x 22.23 x 1.3mm, to be used with an angle grinder. Additional Features Diameter retention : Because its' diamond cutting edge doesn't wear away, Extreme Diamond Edge holds its' original wheel diameter until the very last cutLess dust, better workspace : Because Extreme Diamond Edge doesn't wear out there is substantial reduction of airborne particles One wheel - multiple metals : Extreme Diamond Edge works in a wide range of materials including steel, stainless steel, cast iron, rebar, sheet metal, aluminium and non-ferrous metals.