Features: Made of fine supplies for durability 50mm CMM Touch Probe Stylus 6mm Diameter Ru by way of Ball Ceramic Rod M4 CMM A-5000-3709. CMM probe tip ball ceramic shaft threaded shank M4. Easy to apply an extended provider life and does not wear the skin from abrasive materials. Product parameters: Model: A-5000-3709 Threaded handle: M4 Ball diameter: ?6mm Ceramic stem: ?4 Please note: the physical slightly coloration contrast or difference, does not affect the use, please don't mind, thank you! Material: Metal+ceramic colour: As Shown Package Contents: 2 x Contact probe Only the above package content, different products shouldn't included. Note: Light mirrored image and diversified exhibits could cause the color of the article in the picture slightly different from the genuine thing. The length allowed error is +/- 1-3cm.