Description: 【Essential Protection】: Keep your telescope eyepieces, camera lenses, and other accessories with M48 female threads. This Lens Cap provides a secure seal to protect your equipment 【Construction】: Crafted from quality aluminum alloy, this Telescope Dust Cap offers nice durability. It is builts to last and will not crack or break, ensuring long term protection for your gear 【Precision M48 Thread】: Features a standard M48x0.75mm female thread with a 7mm depth, ensuring a secure and fit on a wide range of astronomy filters, adapters, and accessories 【Easy to Find Design】: The bright red finish not only adds a professional look to your kit but also makes the cap high visible. Easily find it in your accessory case or in the dark during nighttime observing 【Compact and Universal】: With dimensions of 5.1cmx5.1cmx1cm/2.01inchx2.01inchx0.39inch, this Thread Dust Cover is a essential accessory for any astronomer or photographer Specification:   Size Chart: 5.1cmx5.1cmx1cm/2.01inchx2.01inchx0.39inch Thread M48x0.75mm Thread Depth 0.7cm/0.28inch Package Includes: 1 Telescope Dust Cap Note: 1. Please allow slightly error due to manual measurement.