Whiteside Panel Tongue & Groove Bit Set, 1/2 in. SH x 1-5/8 in. LD x 1 in. CL is an excellent choice for making paneling or cabinet doors. This set allows large areas to expand and contract with moisture conditions, helping to resist buckling. The beveled edge at the seam provides a classic, period look i for certain styles of furniture and paneling. For materials over 1" thick, a second cut on the tongue profile is needed to remove excess stock, but it works with materials ranging from 5/8" to 1" thick. Featuring ball bearing guides and carbide-tipped, two-wing bits, this set ensures precision and durability. Made by Whiteside Machine Company in Claremont, North Carolina, it combines quality craftsmanship with practical design. Model Number: 3374