1pc Heavy Duty Opthalmic Eye Occluder for Testing Purposes Electricity Essentials or other settings where multiple

or other settings where multiple tubes are needed

Easy-to-read LED display

Housed in a compartmented collection box

Water resistance

sieve tube

1pc Heavy Duty Opthalmic Eye Occluder for Testing Purposes Electricity Essentials or other settings where multipleIncludes: 1 x Heavy Duty Opthalmic Eye Occluder. Color: Black. 14 Pinholes design can clearly display the target objects, exercise the eye muscles. Premium Quality: Occluder is made of high quality, heavy duty and durable materials. Designed for use in professional fields but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please contact us. Safely Packaged to avoid being damaged