5'' NH H&L 1960 (100 DISCS)Hook & Loop Grain: Zirconia Aluminum Oxide Grits 24 40: fibre backing Grits 50 150: F weight paper Sanding of paint, filler, old varnish Light deburring of mild stainless steel Grinding of welding seams and joints May also be used on composite materials Fast, easy disc changing thanks to Siafast hook and loop fastening system Low force required for high rotary stock removal Product for dry applications on mild steel, steel alloys, stainless steel and