Avoid dosing errors with this syringe magnifier that easily clips firmly onto all 1cc and 1/2cc insulin syringes. It magnifies the calibrations 2 to 2 1/2 times, making it easy to see exactly how much you are measuring. Made of clear, sturdy plastic, this EZ See syringe magnifier will become an invaluable tool in keeping your diabetes under control. Measures approximately 3.54 L x 1/2 wide.