The Whiteside UDC9163 is an ultra-long combination bit ideal for flush trimming thick stock up to 1-5/8 inches. Featuring a 1/2-inch shank and cutting diameter of 7/8 inches, this bit can flush trim edges with incredible precision thanks to its compression-designed 1-5/8 inch cutting length. Whether trimming solid wood, laminates, or veneers, the UDC9163 delivers an ultra-clean, crisp edge on both the top and bottom surfaces through even the most difficult grains. As with all Whiteside bits, quality craftsmanship and materials ensure optimal performance, from smooth plunging and routing to easy cleanup. Ideal for cabinetry, furniture, molding, and more, the UDC9163 ultra-long flush trim bit enables professional results on projects of any scale.