Brand new and high quality Features: The extra-large magnetic field probe (Type III) is mainly used for the correction of EMI conduction. The use of a fully shielded structure greatly suppresses electromagnetic interference from external environmental noise and improves the dynamic range of the entire system. It is beneficial for improving position detection accuracy. The wrist part is also shielded, reducing the influence of the hand on the probe. Increased thickness for greater hand comfort. Specifications: Material: Metal + Plastic Optional Styles: A(Type II), B(Type III) From large to small diameter: approx. 55, 25, 16, 10, 10 mm (2.17, 0.98, 0.63, 0.39, 0.39 inches) Height: approx. 100 mm/3.94 inches Color: As the pictures show Quantity: 1 set Note: Please allow 0-1cm error due to manual measurement. Make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 set x Magnetic Field Probe (other accessories demonstration in the picture is not included.)