[Router Bit Size] Countersink router bits with radius sizes: 1/8" (3.17mm), 3/16" (4.76mm), 1/4" (6, 35mm), 5/16" (7.93mm) and 6mm stem [Premium Material] Solid 45 hardened steel rods and C3 micro-grain tungsten carbide burrs, high-tech special grinding process and advanced spray coating technology with anti-kickback design [Application] Roundover Edging router bits are used for edging, these bits can also be used to create miter joints of different angles. Ideal for combined plunge cutting and pattern/pattern routing [Range of use] Top bearing rounding edge forming cutter set is used for wood, MDF, laminate, particle board, plywood compact board, acrylic, etc. . [What You Get] 6mm Round Shank Multi-Purpose Burr Set of 4 Product Description 6mm Shank Rounded Over Bit, 4PCS Rounded Corner Edge-forming Bit Set Woodworking Milling Cutter Tools for Cutting, Threading, Chamfering Description: Industrial grade micro-grain carbide tips; Baked-on heat-resistant coating prevents buildup of sawdust, resin and pitch Top bearing rounding edge forming bit creates smooth rounded edges on boards and panels Roudover Edge Router Bits are ideal for combination plunge cutting and pattern/pattern routing Chamfer bits can be used without the bearing like a standard straight bit Carbide router bits have 2 regular blades which can be especially handy in a router table on CNC, table-mounted and handheld routers Specification: Item Type: Corner Rounding Router Bit Body Material: 45 Carbon Steel Stem Diameter: 6mm Blade Material: YG8 Alloy Carbide Radius: 1/8"(3.17mm),3/16"(4.76mm),1/4"(6.35mm),5/16"(7.93mm) Package includes: 4pcs x Round Router Bit Note Always wear goggles and use hearing protection equipment when working Always use the safety cover provided by the benchtop router table