Features • 1/8" R, 1/4" R, 5/16" R, 3/8" R, 7/16" R, & 1/2" R • 1/2" Shank • industrial quality • C3 tungsten carbide cutters • Solid hardened steel body • anti-kickback design • build-up resistant coating • lifetime WARRANTY • Satisfaction Guaranteed great for edging or molding applications, This 6 bit round-over router bit set is a staple for any woodworking shop. Complete with 6 practical sizes, This set is bound to come in handy for countless woodworking projects. Radius sizes: 1/8", 1/4", 5/16", 3/8", 7/16", 1/2". All bit shanks are 1/2".