This Offer is For 40 Pcs Of Blade. 40x Cut Off Blade (1/16" x 5/16" x 3-1/2") Single H M2 Grade H.S.S Hardened & Ground Description Fit almost all common tool holders Hardened and ground for Accuracy  Trapezoidal section to fit all standard tool holders Sizes Width Of Blade - 1/16" Height Of Blade - 5/16" Length Of Blade - 3-1/2"