Crepe is the standard rubber formulation used for belt cleaning blocks. It is pretty much the same stuff people have been wearing on the bottoms of their shoes for years, and if you have ever had a pair of crepe soled shoes, you`ll know how long it lasts. This abrasive cleaning block is designed for use in the production woodworking industry, easily cleaning away loaded wood particles and resin that has accumulated on the surface of the abrasive belt or disc. More importantly, this cleaning stick is all-natural and no chemicals are needed. Imported.