12-Hole Bur Holder - Blue, Adjustable & Sterilizable. Guards burs from damage during ultrasonic sterilization. Adjustable height for multiple length burs. Protect burs from damage during ultrasonic sterilization. They are designed to fit latch, friction grip, and HP burs, with adjustable height to hold multiple length burs simultaneously.The drain holes at the bottom of the bur guards guarantee rust prevention, and they also include one bur adapter for use on short burs.