Features: _x000D_ It is used in the lens cone with the diameter of 23.2mm. _x000D_ The Wide-angle eyepiece has a view field more than 50% larger than normal eyepiece _x000D_ The image is bright and clear, and the effect is clearer _x000D_ The eye is not easy to be tired when observing, protect your eyesight _x000D_ It fits most common size compound biological microscopes _x000D_ _x000D_ _x000D_ Specification: _x000D_ Model:DM-WF001 _x000D_ Magnification Power:10X _x000D_ Connector diameter: _x000D_ Size: 23.2cm/9.1in _x000D_ Weight: Approx.50g/1.8oz _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x eyepiece _x000D_ 1It is used in the lens cone with the diameter of 23.2mm. 2The Wide-angle eyepiece has a view field more than 50% larger than normal eyepiece 3The image is bright and clear, and the effect is clearer 4The eye is not easy to be tired when observing, protect your eyesight 5It fits most common size compound biological microscopes