Hexagon original accessories for measurement systems on machine tools ensure highest precision and reliability in the production. Content: 1x Magnetic base for calibration ball 1x Extension (L = 75 mm / 2.95") 1x Calibration ball (D = 40 mm/1.57") 1x Measurement certificate for ball diameter 1x Mounting pin D6x80 1x Storage box All images are for illustration purposes only and may differ from the actual product.