Material Plastic Rubber Inner Diameter 33 mm or 36 mm (optional) Application Fits stereo microscope wideangle eyepieces Also suitable for eyepieces of microscopes, telescopes, and other lenses Key benefits Durable and stable for longterm use thanks to quality materials Flexible design for a secure and reliable fit on compatible eyepieces Simple, compatible accessory that broadens the range of compatible optics Specifications and compatibility Material: Plastic Rubber Inner Diameter: 33 mm or 36 mm (optional) Application: Stereo microscope wideangle eyepieces; eyepieces of microscopes, telescopes, and other lenses Use scenarios Classroom or lab setup: Use with stereo microscope wideangle eyepieces to enable quick changes between eyepieces while maintaining stability. Laboratory or field work: Adapt eyepieces on microscopes or small telescopes for varying optics without replacing components. Hobbyist or research environment: Serve as a versatile accessory to support multiple lenses and ensure a durable, longlasting fit.