Ultrasonic inserts, specifically designed for access cavity refinement and canal orofice location. Micro milled active part means a minimised risk of diamond grit loss in the patient's mouth. Water port cools down the insert and avoids overheating of the threaded tooth. This is particularly important when removing metal posts which usually require high energy. The intermittent use of the irrigation enables the clinician to alternate between dry precision work and debris evacuation. Insert 1 application: access cavity wall refinement. Insert 2 application: MB2 canal scouter (2nd canal mesio buccal root). Insert 3 application: canal openings scouter. Insert 4 application: metal post removal. Insert 5 application: reveals the orginal pulp chamber floor anatomy. The inserts have been designed to be exclusively used with a Piezo ultrasonic generator.