Capacity: 5 – 20 mm Taper: B18 Diameter (d): 21.793 mm Length (l): 40.5 mm Length (L1): 116 mm Overall Length (L): 129.2 mm Diameter (D): 57 mm Enhance your machining capabilities with our self-tightening chucks, engineered for reliability and precision. With a robust capacity range and a durable B18 taper, these chucks provide dependable performance across a variety of applications, making them an indispensable addition to your workshop.