Feature:1. Smoothly Cut To Tooth Width: The tongue groove router bit can smoothly cut to tooth width, resulting in clean, no debris2. Non Backlash Design: Rugged body of T shaped cutter with non backlash design, more sturdy and durable for you to use3. For Handmade Drawers Or Other Woodwork: Suitable for handmade drawers or other woodwork, can be used for wood side to side or end to end connection4. For Wood Or Floor Tenon: Wood milling saw cutters are used for wood tenon, floor tenon, helps a lot in woodworking5. Long Service Life: This grooving cutter possess stable structure, excellent performance and long service lifeSpecification:Item Type: Tongue Groove Router BitTool Handle Diameter: Approx. 8mm / 0.31in, Cutter Head Diameter: Approx. 28.5mm / 1.12inMaterial: YG6 primary alloy + 45# carbon steelBalance: ±0.003in toleranceUses: Used for wood tenon joint, floor tenon joint Package List:1 x Single Tooth Tenon Knife1 x Double Tooth Tenon Knife2 x Storage BoxNote:Please allow tiny size error due to manual measurement. Thanks for your understanding.