1-3/4-inch Bi-Metal Universal Oscillating E-cut Blade For Fein, 6 Pack Compatible with FEIN MultiMaster, Dremel Multi-Max, Bosch Max Multi-X, Craftsman&other tool Bi-metal toothing for variety of applications Designed for Saws wood, plastic, and metals Standard High Carbon Steel (HCS) Teeth 1-3/4-inches wide