Roundover undermount bits are designed specifically for trimming and rounding the edges of solid surface materials around undermount sink and bowl installations, where a polished, finished edge is essential to the final appearance. These carbide-tipped bits deliver clean, consistent curved profiles on Corian, Avonite, and other solid surface materials, and are built for durability across repeated use in professional countertop fabrication. They are commonly used in combination with overhang trim bits and flush trim bits as part of a complete undermount sink finishing sequence.