Feature: 1. [Applicable Eyepieces] This 2 piece set of microscope eyepiece eyeshields, with a diameter of 44mm, is suitable for 40 to 42mm interface eyepieces. 2. [Clear Vision] Our rubber eyepiece eye cup could prevent your eyes from touch with the lens, ensuring clear vision without blur. 3. [Comfortable Rubber Material] The eyepiece covers are made of rubber material, soft and comfortable to the touch, providing a non slip grip. 4. [Flat Angle Eyeshields] These microscope eyepiece eyeshields are flat angle designed, able to be folded for use, simple and convenient. 5. [Microscope Replacement Part] This eye cup set is designed for replacing damaged or worn eyepiece cover, easy to install and remove. Specification: Item Type: Stereo Microscope Eyepiece Eyeshield Material: Rubber Model: KP H3 Type: Flat Angle Diameter: Approx. 44mm / 1.73in Thickness: Approx. 1mm / 0.04in Size: Suitable for 40-42mm Interface Microscope Eyepiece Eyeshield. Package List: 2 x Stereo Microscope Eyepiece Eyeshields