These high-quality reflective targets are essential accessories for survey devices and instruments. Each package contains 20 pieces of 4cm x 4cm (approximately 1.6 x 1.6 inch) diamond grade PMMA material reflective sheets. The retro-reflective technology ensures optimal visibility and accuracy for your surveying needs. These reflective targets are ideal for professional surveyors, construction teams, and anyone requiring precise measurement references. The high-grade PMMA material provides excellent reflective properties in various lighting conditions, enhancing the performance of your survey equipment. OEM customization is available for specialized requirements.