CNC short drill chuck for clockwise and counterclockwise rotation • ISO 7388-2 (JIS B 6339 MAS/BT) • Form AD • Taper angle tolerance AT3 • Surface roughness of the taper: Ra < 0.001 mm • Runout accuracy ≤ 0.03 mm • Balancing quality: G=2.5 at 20,000 min-1 • Suitable for drilling, countersinking, reaming, threading, and simple finishing milling operations. Usable in machining centers as well as turning, drilling, and milling machines. Delivery: Includes hex key.