CanAm 1" Inside 90 Corner Applicator Head - 2 WheelsInside Corner Applicators control, and divert the flow of compound onto both sides of 90 inside corners, creating two uniform ribbons of mud in a single smooth action. Smooth rolling wheels guide the head along the wall, and the stainless steel spring clip makes it a snap to attach to any length compound tube. Features: CanAm's most popular model, with two smooth rolling wheels and stainless shoes, it slides along the corner and leaves an even ribbon