Industrial grade micro grain carbide blade, suitable for hand-making or woodworking. Made of high quality carbide alloy forging blade blades for a sharper & longer lasting edge. Build-up & heat resistant polytef coating, anti-kickback design. Mainly used for cutting and smoothing a variety of materials from wood, plywood, MDF and other wood composites etc. CNC Engraving woodworking router bit - 8mm/ 0.315in Shank - 6 Types: Core Box Router Bit, Flush Trim Router Bit, Round Over Router Bit, Roman Ogee Groove, V-Groove 60 Degree, Round Over Beading Edging Router Bit to meet your different needs. Specification: Material: Carbide Alloy Size(Approx.): (Shank x Cutting Diameter x Cutting Depth) Core Box Router Bit: 8mm x 1/2& 39;& 39; x 10mm Flush Trim Router Bit: 8mmx 5/16& 39;& 39; x 24mm Round Over Router Bit: 8mm x 32mm x 15mm Roman Ogee Groove: 8mmx 1/2& 39;& 39; x 10mm V-Groove 60 Degree: 8mmx 5/8& 39;& 39; x 16mm Round Over Beading Edging Router Bit: 8mm x 28.6mmx 15mm Total Length: 42mm/ 1.65in, 70mm/ 2.75in, 59mm/ 2.3in, 38mm/ 1.5in, 53mm/ 2in, 54mm/ 2.1in Color: Yellow Package Includes: 1 Piece Router Bit