Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: .Feature:1.Groove cutting design,excellent concentricity.2.Suitable for Product materials: Acrylic, MDF, PVC, 3D engraving and chamfer,etc3.Ideal for grooving, rebating and mortising.Double flute straight router bit w bearing.4.Cut decorative grooves and lettering on signs with the groove bit, using with an edge guide to chamfer and bevel edges. Specifications:Product material:Tungsten SteelColor:Silver+GrayShank Diameter:approx.6mm/0.23inBlade Diameter:approx.30mm/1.18inShank Length:approx.35mm/1.37inTotal Length:approx.45m/1.77inWeight:44gSafety instructions:1.Razor blades permanently enclosed in a cartridge or housing with less than 2mm of blade exposed��2. The bladed product is not use for people under 18 years.3. The item is only use for industrial cutting/engraving, not hazardous article.Package include:1 x Groove Bottom Cleaning Bit Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.