Package includes: 3 x 8 mm shank straight router bitProduct size: blade diameter length: 30 mm, 40 mm, 50 mm; handle shank: 8 mm; bearing diameter: 5/8 inch.Professional quality router bits, C3 micro-grain tungsten carbide cutters, solid hardened steel bodies with anti-kickback design to control the depth of cut and work safely.Heat-resistant PTFE coating baking to prevent the accumulation of wood chips, resin and asphalt, good wear resistance, greatly durable life.Cutting, three-dimensional slack angle, slits; suitable for all composite materials, MDF, solid wood, particleboard, plywood and so on.Product details:Body material: solid hardened steel.Extra long straight router bit, anti-torque force, cutting sharp, smooth rotation.Professional quality router bits, C3 micro-grain tungsten carbide cutters, solid hardened steel bodies with anti-kickback design to control the depth of cut and work safely.Double-edged cutting design, excellent concentricity for fast smooth and accurate trimming cuts for laminates and template work.Build-up and heat resistant Teflon coating.Carbide tipped - micro grain grade provides increased strength and utmost resistance.Product size:Size 1: handle shank: 8 mm; blade diameter length: 30 mm, bearing diameter: 15.9 mm.Size 2: handle shank: 8 mm; blade diameter length: 40 mm, bearing diameter: 15.9 mm.Size 3: handle shank: 8 mm; blade diameter length: 50 mm, bearing diameter: 15.9 mm.Installation instructions:It's very important to use the normal casing size.The tool must be fully inserted into the casing and tighten firmly.We can use in the process of cutting tools must provide clamping force, not only partially inserted into the casing, otherwise it will lead to fracture caused damage to the tool shank.Package includes:3 x router bit."