Shop › PERIODONTAL FILE HIRSCHFELD N.9 - 649/9-10 PERIODONTAL FILE HIRSCHFELD N.9 - 649/9-10 $30.00 Get notified by email when this product is in stock. Add To Cart Added! Hirschfeld periodontal file for interproximal calculus removal. Multi-bladed working tip. Manually sharpened by Medesy craftsmen. DALILA HL8 handle available. Product SKU: 649/9-10 Hirschfeld periodontal file for interproximal calculus removal. Multi-bladed working tip. Manually sharpened by Medesy craftsmen. DALILA HL8 handle available. Product SKU: 649/9-10