The Fein Segmented Diamond Saw Blade features the 4-1/8" diameter blade, Kerf 3/64", and open teeth to make clean cut edges without delamination in CFRP or fiberglass materials. It also is distortion free, makes long straight cuts, high speed cutting, and the diamond coating is good for a longer life of the blade. The blade has the 8 star tool mount that will fit on the Fein SuperCut Construction tools.