Universal trimmer blade by Tego made of high carbon steel in (100 PK). Superior to Personna and Better Blade. Single sided beveled for durability. 2.8" long x .017 thick. Fits Crain, Roberts, Gundlach and Taylor wall trimmer. These carpet blades are made of 30% higher carbon steel They last 35-50% longer than other products in the market. All 100pk blades come in individual compartments of 10 and makes it convenient when sharing a pack with helpers.