The set includes 48 coded square targets. Target ID# 214 - 261. Measurement in millimeters and grams L (mm) W (mm) H (mm) Weight (gram) Center Dot Diameter (mm) 96 96 1.6 16 16 Measurement in inches and ounces L (inch) W (inch) H (inch) Weight (oz) Center Dot Diameter (inch) 4 4 1/16 0.56 0.63 The coded Square Target engraved on a matte industrial grade acrylic-based material without rubber backing*. The acrylic-based material is stiff and allows the target to be clamped easily. This set will work with PhotoModeler's Rubber-backed Letter Sheet System and Card-backed Letter Sheet System. You cannot use targets with the same ID numbers in one project, and your ID numbers cannot overlap. Please confirm your current target ID numbers prior to placing the order. For clients outside of Canada, you may have to pay duties, taxes, VAT, etc. on import. You are responsible for importation paperwork and fees. If you cannot place order on the checkout page because no shipping options are available to your address, please contact [email protected] or Contact Us page. *Glued rubber backing will be available shortly The material is: UV-resistant Fully waterproof Rigid Easy to clean Durable and long lasting Care & Maintenance Store flat Spot clean - lukewarm water mix with mild soap and wipe the target surface with microfiber cloth Do not use solvent based cleaners or Isopropyl alcohol cleaners