- These are reflective positioning targets for 3D scanning M-1K, quantity in 1,000 dots.- Specifications: Black contour diameter in 13/32”, reflective area in a circle with diameter of 7/32”. - These targets are compatible with almost all brands of 3D scanners that required to use reflective positioning targets for scanning.- If having a doubt that your scanner could use these targets or not, try the M-50 first. The M-50 targets are the exact same ones as M-500, M-1K, M-2K, M-5K, & M-10K, only difference is the quantity:- M-50: 50 targets- M-500: 500 targets- M-1K: 1,000 targets- M-2K: 2,000 targets- M-5K: 5,000 targets- M-10K: 10,000 targets - To make it easier to detach the targets from the base sheet, use a pen (or finger) to roll the base sheet first. (See the 2nd picture for demonstration) - Free standard shipping to 48 lower states in the United States by USPS First Class Package, with a 5-10 business day of delivery expected. FedEx Standard Overnight service is available by paying $35 extra.