Product dimensions: Total length 95mm, width 28mm, aperture 13mm. Measurements are taken manually; please allow slight errors. Compatibility: This product is suitable for CNC machines, lathes, and milling cutters. Strong Clamping Force: The extended rod diameter and other components are precision-ground to eliminate imbalances and improve cutting stability. Directly tighten the nut for high rigidity and exceptional clamping force. Material: This product is specially designed and constructed of metal, ensuring a long lifespan and resistance to damage. Product include a total of 1pc Extension Rod,1pc Collet Nut, which can completely meet your daily use needs and replacement., Manufacturer: AS Axis Spindleon