Woodtek 820109, Router Bits, Edge Forming, Roundover, 1-1/2" Radius Round Over Bit, 1/2 Shank Woodtek carbide-tipped corner rounding router bits soften furniture edges and feature a shear angle that provides smoother cuts. Specifications: "D"=3-1/2 in, "d"=1/2 in, "R"=1-1/2 in Specifications: "OAL"=3-3/8 in