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".