Feature:1. DURABLE CONSTRUCTION: This mini prism system with side bubbles is an all metal prism assembly with powder spray fluorescent orange and fluorescent yellow targets2. CLEAR AND ACCURATE: Optical glass accurate detection enhances the reflection ability of prism, full of texture, clear and bright, more accurate and durable measurement3. HEAVY DUTY PRISM: This heavy duty 25.4mm diameter copper coated prism for fog resistant also features an angled bracket with friction shaft, offset 0mm or 30mm4. SCOPE OF APPLICATION: Mini prism reflector can be used for tunnel, subway, mine, highway detection, suitable for Leica5. COMPLETE ACCESSORIES: Prism system kit with U frame, adapter, S hook, lid for easy installation and use, and bag for easy storage and carryingSpecification:Item Type: Mini Prism SystemMaterial: Optical glass and aluminum alloyConstant: 0mm/-30mmEffective Diameter: Approx. 25.4mm / 1inApplication: Tunnel, subway, mine, highway detection, suitable for Leica.Package List:1 x Mini Prism1 x U Shaped Box1 x Adapter1 x S Hook1 x Lid1 x Storage Bag