Solid hardened steel bodies with anti design. Build-up and heat PTFE coating. Totally enclosed and lubricated. Industrial grade Mini-grain alloy blade. Simple construction, easy to operate. Perfect choice of professionals and hobbyists. Using for hand-making a drawer or other woodworking. Suitable for woods, MDF, particle board, plywood compact panel Avoid cutting ferrous metal and non wood materials, such as: steel, iron, sand, etc. name: slot router bit set Material: alloy , steel Colors: silver and yellow size: Handle Diameter: 1 or 2 inch (12.7 MM) Tooth width: 1 or 4 inch(6.35 MM) Depth of tooth: 1 or 4 inch(6.35 MM) Tongue Router Bit Size: 75 x 40mm or 2.95 x 1.57 inch(L x Dia) Slot Router Bit Size: 72 x 40mm or 2.83 x 1.57 inch (L x Dia) Weight: 238 grams For circuit board size: 13-19mm Package Contents: 1 x Tongue router bit 1 x Groove router bit Safety Code: 1. The blade is permanently encapsulated in the blade or housing where the blade is exposed, and the blade length is less than 2 mm. 2. Blade products do to people under 18 years of age. 3. This item is for industrial cutting or engraving only, not dangerous goods. Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.