Algerbrush II Complete Ophthalmic Burr Tool. The standard for rust ring removal. This tool comes complete with a 1mm burr and chuck. Completely sterilized and reusable. Must be sterilized before each use. In addition to rust ring removal, the Algerbrush II may be combined with a new Pterygium attachment allowing your instrument to smooth out corneal or sclera cell edges created from Pterygium excision promoting accelerated healing.