Item Type: Tongue Groove Router Bit Material: Main Body: Carbon steel, Bit: Alloy Specification: Shank Diameter: 1/2in Cutter Head Diameter: Approx. 47.6mm / 1-7/8in Blade Depth: 1/2in Package List 2 x Milling Cutter 2 x Gasket 2 x Storage Box 1For DIY Projects: This drill bit set can be used to make joint of the cabinet door frame, plane, even floor, wall panel, panel, table top and other DIY projects 2Clean Cut: The cut of this T shape router bit is very clean and everything is perfectly integrated, very practical 3For Woodwork: Used for hand made drawers or other woodwork, the cutter can smoothly cut into materials, resulting clean, no debris 4Heat Resistant PTFE Coating: Rugged carbon steel body use anti backlash design, bit accumulation and heat resistant PTFE coating protection 51/2in Shank Diameter: Shank diameter is 1/2in, blade is made of good quality alloy material, which is wear resistant and durable