Carbide teeth kit：3 PCS 1-3/8 inch (34mm) Carbide Teeth Oscillating Saw Blades, tungsten carbide teeth design, Last 30 times longer versus a conventional bi-metal blade in metal. for tough cutting jobs on hard material..High-quality carbide serrations：Carbide teeth for high performance in metal and other materials super endurance, for hardened materials, e.g. stainless steel, hardened screws and nails, fiberglass and plasterboard boards, etc. It will be an indispensable blade in your cutting work..Upgrade craft: Carbide laser welding technology , slim body makes the blades extremely more stable and durable, for heavy duty nails cutting. The saw blade blade are coated with electrophoretic black finish which protects against corrosion..Universal interface system: Our Multi tool blades kits it is perfectly compatible with more than 95% of the oscillating tools on the market, as Fein Multimaster, Ryobi, Milwaukee, Hitachi, Black & Decker, Chicago Electric, Dewalt, Craftsman and others. Do not fit Bosch Quick Release tools: Do not fit Fein Starlock,Bosch MX30; Adapter required for Fein Supercut; Adapter required for Dremel MM40 & MM45. (Incidental 2pcs extra C-clip adapter to fit more models）.Precision cutting design: Power oscillating tool blades built-in length markers on two sides, one side is inch and other is centimeter, ensure you can get accurate cuts easy and fast while you working with multitool saw blades.