High quality weld, stable quality, high yieldCarbide tipped - Micro grit grade provides the increased strength and greatest toughnessHeat resistant PTFE baked on to prevent buildup of wood chips, resin and asphalt Top bearing router bit set cuts all compostion materials, plywood, hardwood and softwood 3 Pcs 1/4" Shank Flush Trim Pattern Router Bit SetFeatures:- High durability, not easy to break the knife, the effect is smooth, it is carved large table surface and rough carving processing.-The cutter head is made of high-quality hard alloy, and the blade is fine and smooth.-The cutting surface smooth, long service life, is a good helper of decorative wood processing.-Can be hardwood, cork, synthetic board and other organic wood and glass, artificial board, such as cutting smooth rounded surface.-The cutter body is made of high quality steel by heat treatment, high hardness, high wear resistance, etc. Specification: Material: Carbide Tipped Shank Diameter: 1/4 inch Bearing diameter: 1/2 inch Blade length: 11.9mm, 20mm, 25mm Color: Blue/YellowContent:3pcs x 1/4" Model Router Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference , there will be some color difference, depending on the physical item received.