With invectra router bits, kitchen fabricators, remodelers and construction workers can perform any kind of cut and trim job in aluminum laminates. Designed and tested for trimming all decorative aluminum laminates manufactured by Formica (except Formica #2178), advanced technology Inc. (Ati), decometal and many others. Engineered from an Amana Tool exclusive carbide grade designed specifically for cutting both Aluminum laminates and wood-based substrate materials. Each bit is fitted with a steel bearing guide that enables users to trim laminate materials flush to the substrate, allowing you to perform any metal trim job to perfection!, not for use on stainless steel., #51430, diameter (D) 1/4, cutting height (B) 5/8, shank (D) 1/4, overall length (L) 2-3/8, replacement bearing 47723 (2pcs), screw # 67134, flutes 2, 51430 Solid Carbide invectra aluminum laminate trim 1/4 dia x 5/8 x 1/4 inch shank