Algerbrush II Rust Ring Remover is called a brush because it works more like a brush than a burr. Under normal usage, the AlgerBrush motor has been designed to stop before injuring the cornea. At slow rotation, the cold chiseled edges of the special high quality burrs are too blunt to harm corneal tissue. The Algerbrush motor is so quiet that its rotation is nearly undetectable, which combined with its small size (shorter than a ball point pen) serves to significantly lower, if not eliminate any patient apprehension. The Algerbrush II Rust Ring Remover features an integrated on/off switch. The Algerbrush includes AA battery and one Burr. The instrument is supplied Ready to use. The Algerbrush is available with diamond Pterygium Burrs.