Compatible with FEIN MultiMaster, Dremel Multi-Max, Bosch Max Multi-X, Craftsman NEXTEC, Skil Multi-Tasker, Milwaukee M12, oscillating tools with 3/8-Inch round arbors, and many more; Notes: Not compatible with FEIN SuperCut or Rockwell SoniCrafter * Universal high speed steel (HSS) teeth * Recessed design allows flush cutting * Segmented design allows cutting into corners without damaging the adjacent material * Laser etched markings