Feature: 1. [Quantity and Size] The set includes 10 sheets of 3D scanning markers, with each sheet containing 20 markers, totaling 200 markers, with 12mm inner diameter and 19mm outer diameter. 2. [High Performance] These 3D scanning dots have high reflectivity, tear resistant, water proof, sunlight resistant, with high ink absorption and and repeatable adhesion. 3. [Working Principle] Use bright reflective film to adhere a layer of reflective glass microspheres on PET film by aluminum plating, and print hollow circular reflective dots according to specific sizes through screen printing. 4. [User Friendly] Featuring a sticky foil design, these markers are easy to apply and remove, providing accurate data for 3D scanning, reverse engineering, metrology, and inspection applications. 5. [Wide Application] The positioning markers are suitable for 3D scanner in the field of motion information collection, such as 3D motion capturing and gait analysis. The markers reflect the light emitted by the equipment (usually infrared), which is then received by the data equipment for processing, enabling precise data acquisition. 6. [Versatile Usage] These 3D scanning markers are suitable for industries such as automotive, aerospace, machinery, manufacturing, power generation, electronics, and education, aiding in various scanning and tracking processes. Specification: Item Type: 3D Scanning Marker Material: PET, Reflective Film Model: Inner 12 Outer 19 Inner Diameter: Approx. 12mm / 0.47in Outer Diameter: Approx. 19mm / 0.75in Thickness: Approx. 0.15mm / 0.006in Performance: High Reflectivity, Strong Adhesion Quantity: 10 Sheets (20pcs Per Sheet). Package List: 10 Sheet x 3D Scanning Marker (20 Pieces Per Sheet, Total 200 Pieces)