DescriptionPlastic material can ensure its durability and practicability. It is perfect for eyesight testing use. The visual test tool kit is designed with practical function, so you can test precisely how is your eyesight going on with it. It is suitable for home, school, clinic, etc. Cost-effective, you can buy this practical product at an affordable price.Features-Color:Black-Material:Plastic-Size:24.00X6.00X0.50cm/9.43X2.36X0.20in- The eye occludes are suitable and wonderful for eyes chart exam use, excellent and useful.- Used by ophthalmologists, orthoptist and optometrists to test visual acuity, simple and practical.- Made of plastic materials, it is not easy to break, sturdy and exceptional, safe and simple.- Ergonomic design, easy to put on your eye and comfortable to hold, good eye feeling for you.- Compact and delicate, convenient for storage. Incredible and great eyesight test tool for school and hospital.Packing list: 3 x Shading Plates