New Horotec MSA22.572-022 micro drill bit set for precision watchmaking and balance work. The package is labeled MSA22.572-022 and contains 6 pieces in a protective storage case. These hard metal micro drills are designed for professional watch repair use, especially fine balance adjustment work where very small, accurate drilling is required. Horotec lists this series as micro drills in hard metal for balances, with the MSA22.572-022 reference included in the 0.17mm to 0.22mm range. The visible packaging and part number indicate this set is the 0.22mm version. Great for watchmakers, repair benches, jewelry shops, clock and watch restoration, or precision hobby work. Condition New in protective case and outer plastic packaging. Please review photos for exact item and quantity included. Key Features * Horotec watchmaker micro drill bits * Part number: MSA22.572-022 * 0.22mm size reference * 6-piece set * Hard metal construction * Protective plastic storage case * Designed for balance adjustment work * Precision tool for watch repair and restoration