Welcome to our store！</br>1、Performance: Inner diameter is 25mm/0.98in, and to prevent the microscope's objective lens from falling off and causing damage. 2、Excellent Features: Professional and practical design with exquisite appearance, compact structure, easy to carry and use. 3、Wide Application: Usually wide used in laboratories, schools, teachers, sample observation, eyepiece protection, etc. 4、Essential Parts: Microscope pillar bar adapter is an essential microscope accessory, reliable and dependable, easy to install. 5、Reliable Material: This ring is made of durable ABS and metal material, sturdy and stable, and can be used for a long time. <p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text">Item Type:&nbsp;Microscope&nbsp;Pillar&nbsp;Bar&nbsp;Adapter Material: ABS and metal Inner Diameter: Approx: 25mm/0.98in <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Microscope&nbsp;Pillar&nbsp;Bar&nbsp;Adapter Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>