DURABLE MATERIALS: Prism is ideal for all robot jobs requiring survey rods, and are made of excellent materials that can withstand the work site environment 2. FULL PROTECTION: A plastic case surrounds the top and bottom of the prism to protect the glass in case the prism rod flip over at the top 3. EXCELLENT PERFORMANCE: 360 degree mini prism is made of k9 glass and ABS material, versatile, lightweight and compact, clear and efficient 4. APPLICABLE SCENARIO: 360 degree prism can be used for tunnel,, mine, highway, etc. Applicable to measuring instruments 5. WIDE APPLICATION: Total station mini prism is widely used in railway, dam, steep slope and other industries, useful and practical. Item Type: 360 Degree Mini Prism Material: k9 optical glass, ABS Constant: +23.1mm Effective Diameter: Approx. 25.4mm / 1in Application: Tunnel,, mine, highway and other detection, suitable for measuring instruments Use: Widely used in, railway, tunnel, dam, steep slope and other industries. 1 x 360 Degree Mini Prism. 1 x Storage Bag. Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.