Inside Ring Burs: 3/32" (2.88mm) Shank

This inside ring bur is designed for the initial cleanup of raw jewelry castings. It quickly removes heavy investment residue, sprue stubs, and significant surface irregularities from the inside of a ring or bangle. Despite its aggressive cutting action, the bur's shape prevents it from gouging the metal, providing a controlled and efficient start to the finishing process. It is a rugged tool built for production environments where speed and effectiveness in the early stages of metal finishing are paramount for maintaining high output.