Whiteside 15 Deg. Undersized Panel Shaker Stile & Rail Bit Set features a 15-degree Shaker pattern designed specifically for cabinet door construction with undersized 1/4" panels, which have an actual thickness of 7/32" or 5.5 mm. This set works seamlessly with frame stock ranging from 5/8" to 13/16" thick, making it i for precise woodworking projects. The bits are carbide tipped with two wings and are bearing guided for smooth, accurate cuts. Each bit has a 1/2" shank for compatibility with most routers. This 2-piece stile and rail set includes one stile cutter and one rail cutter, providing everything needed for professional-quality cabinet doors. groovers are also available with Groover Cutter #6622 and Tongue Cutter #6631. Manufactured by Whiteside Machine Company in Claremont, North Carolina. Model Number: 6008