Features： 1、APPLICABLE MODEL: Compatible with most manufacturers, such as for Trimble, for Sokkia, for Topcon, for Pentax, for Nikon, etc. 2、FORM FACTOR: This is a measuring prism with soft protective case, basic circular prism reflector and holder 3、WITH CONNECTOR: Measuring prism come with adjustable brass connector, flexible, you can use with confidence 4、THREAD AND MATERIAL: The bracket has 5/8x 11 thread, ABS and K9 material, high gloss, light transmission, no bubbles 5、SIZE PARAMETERS: Measuring prism effective diameter for 64mm, measuring prism offset is 0/‑30mm, you can master and use Specification： Item Type: Total Station Prism Material: ABS and K9 Effective Diameter of Measuring Prism: Approx. 64mm / 2.52in Measuring Prism Offset: 0/-30mm Bracket have 5/8x 11 threads Package List： 1 x Prism 1 x Storage Bag