Feature:1. DURABLE MATERIALS: Prism is ideal for all robot jobs requiring survey rods, and are made of excellent materials that can withstand the work site environment2. 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 top3. EXCELLENT PERFORMANCE: 360 degree mini prism is made of k9 glass and ABS material, versatile, lightweight and compact, clear and efficient4. APPLICABLE SCENARIO: 360 degree prism can be used for tunnel, subway, mine, highway, etc. Applicable to measuring instruments5. WIDE APPLICATION: Total station mini prism is widely used in railway, dam, steep slope and other industries, useful and practicalSpecification:Item Type: 360 Degree Mini PrismMaterial: k9 optical glass, ABSConstant: and23.1mmEffective Diameter: Approx. 25.4mm or 1inApplication: Tunnel, subway, mine, highway and other detection, suitable for measuring instrumentsUse: Widely used in subway, railway, tunnel, dam, steep slope and other industries.Package List:1 x 360 Degree Mini Prism1 x Storage Bag