Features： 1、RUBY BALL TIP: Features a ruby ball tip, which has a long service life and will not wear the surface of the grinding material. 2、STANDARD SIZE: The stylus has M4 thread, the contact ball diameter is 6mm, and the length is 110mm, convenient and practical. 3、DURABLE MATERIAL: The stylus stem is made of ceramic material with good rigidity, and the stainless steel connector is hard and rustproof. 4、GOOD PROTECTION: The ceramic stem style also provides additional crash protection for the probe, greatly extending the life of the stylus. 5、EASY OPERATION: Straight line designed for inspection of simple features with direct, unobstructed access to the measurement surface. Specification： Item Type: Probe Stylus Material: Stainless Steel, Ceramic Thread: M4 Application: 3 coordinate machine tool stylus Specification: A-5000-3712 Length: Approx. 110mm / 4.3in Contact Pin Diameter: Approx. 6mm / 0.24in Package List： 1 x Probe Stylus 1 x Storage Box