The Good Antrum Rasp with a length of 165mm (6 1/2 inch) is a precision instrument designed for surgical reshaping and bone smoothing within the maxillary sinus and antral regions. Ideal for use in functional endoscopic sinus surgery (FESS) or sinus lift procedures, this rasp is specifically engineered to aid in delicate bone adjustments and tissue contouring with minimal trauma to surrounding structures.