Roundover Router Bit 1/4 Shank Router Bits 1/4 Shank 1/4-Inch Shank, 4 Pack [High quality materials]heat resistant teflon coating,Industrial grade micro grain carbide tips,High-quality alloy steel bodies, cutters provide superior wear resistance and long life, with anti-kickback design. [Application scene] Creates smoothly radiused edges on boards and panels,Can be used without the bearing as a conventional straight bit, Great for combined plunge-cutting and pattern/template routing,Cuts all composition materials, plywoods, hardwoods, and softwoods [Package include] 1/4 Inch Shank Versatile Round Over Edging Router Bit Set, 1/2", 3/8", 1/4", 1/8" Radius?4 pieces? [instructions] For increased work piece visibility, use shank bearing flush trim bit in a handheld router allowing the template to be positioned on top of the work piece,In a router table, the template will be positioned underneath the work piece. [After sales worry free] Perfect service The support is not satisfied with the refund service. If you have other questions, please contact us, and we will give you the perfect solution as soon as possible.