Trade Quality 115mm 41/2 inch 80 Grit Sanding Flap Disc (10 pack) - NEW For use with 4 1/2'' (115mm) angle grinders and sanders when removing rust, grindingwelds, parting lines on casting and carbon steels or removing rough edges on most surfaces. This is 80 grit but we also have a finer 40 grit flap disc in stock. The high grain adhesion is for a long life which outlasts conventional sanding discs by up to 25 times, with these flap discs there is no backing disc required, it fits directly onto an angle grinder and with different gritsdiscs you'll be able to finish your job a lot quicker than any conventional method. We repeatedly sell these discs to garages to help show their quality and affordability. You see these for sale in specialist shops for about £1.99 each. Goggles should always be worn when using this tool. Specifications Size4 1/2” (115mm) Aluminium Oxide backing pad Lasts up to 25 times longer than a regular sanding disc 40 grit Internal diameter22.2mm