40 Grit Sanding Discs

Serious Grit 40 grit sanding discs are premium film-backed velcro discs designed to fit most 5" and 6" random orbital sanders with hook and loop backing pads.  This is an extra coarse grit, used by woodworkers, metalworkers and DIYers for heavy stock removal, paint removal, or other very heavy sanding projects. It works well on metal and can be used for grinding or flattening imperfections. It also works well on softwoods where rough shaping or very heavy stock removal is desired. It has extremely strong cutting power and can be used standalone or in a progression with other grits from coarse to fine. It is typically not used with hardwoods or other furniture woodworking because the material removal rate is so high.  Serious Grit 40 grit sandpaper uses aluminum oxide with fused zirconia. This gives the discs a much longer life vs standard aluminum oxide discs. They're also made with a premium heat treated zinc stearate coating to reduce clogging which helps prolong the life and reduce