Description Description Feature:Folding blade, Multi-tool and Blade under 3 inches.Only for adults 18 years of age All heat-treated blade, with high concentricity.Resist torsion and strong.High-grade carbide blade with sharp cutting, smooth rotation, operating light.The long lasting carbide tipped router bits last longer than the HSS style bits.Specification:Material:45 Carbon Steel, YG8 AlloyColor:Silver and RedShank Diameter: about 6.35mm (1/4 Inch)Package Size:17.5 x 12.5 x 4.7cm/6.89 x 4.92 x 1.85 inch(L x W x H)Weight:519gSafety instructions:1.Razor blades permanently enclosed in a cartridge or housing with less than 2mm of blade exposed2. The bladed product is not use for people under 18 years.3. The item is only use for industrial cutting/engraving, not hazardous article.Note:Please rotate the bearing before use, in order to avoid bearing looseningPackage Include:1 x Set of 15pcs Woodworking Carbide Router Bit1 x Wooden Case 1 x Wrench