Features Aluminum oxide sanding sheets, Quick and easy installation thanks to their hook-and-loop backing. The sandpaper is suitable for delta sanders, multi 105mm x152mm x93mm. Detachable triangular part for precision work. APPLICATION Grinding the surface of metals, non-ferrous metals, steel and alloys, wood and hollow materials, plastics and polymers, stainless steel. 11 perforations ensuring optimal dust extraction. CONTAINSYou get 6 different grits, 40, 60, 80, 120 and 180 grit, each with 10 sheets and total 60 pieces. This means you have the right sandpaper for every situation. Abrasive - Corundum. Corundum is the most commonly used abrasive. Its important properties, hardness and resistance depend on its already recognizable purity by color. While the hardness and therefore the brittleness increase with the degree of purity, the resistance will increase by adding metal oxides and the cooling rate when making the abrasive agent. Normal corundum is brown and contains more than 94% Al2O3. Its field of application is mainly unalloyed and low-alloyed steels, as well as cast iron and gray cast iron, as well as wood, plasterboard and plastics. Its resistance also allows large contact forces on the part.