Sklar Laborde Tracheal Dilator is a non-ratcheted, single spring, finger ring instrument used to widen a tracheal incision to assist in tube insertion and placement. When engaged, two outer blades open and a third middle blade pulls in towards the handle. The middle blade is cupped and when closed, the two outer blades rest slightly in the middle blade. This product has straight shanks with three curved, blunt blades. The overall length is 5-1/2 inches.