One of the most versatile indicators available. Rugged, with few moving parts. For full use, the operator first chooses the proper contact. From the three hardened contact points that come with each model. Shank diameter is 1/4 (6.3mm).Attachments include clamp, tool post holder, snug and hole attachment. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Inspection & Measurement\Indicators". The seller is "excelerator1" and is located in this country: US. This item can be shipped to United States.