The filter drawers can be pulled in and out using a small knob. This knob is required because the filter slider will be completely flush with your camera, leaving no room to grab the filter drawers. Extra Filter Drawers can be purchased separately.
Specifications
- Diameter: 3.10" (78.8mm) - Thickness: 0.76" (19.5mm) - Telescope Side Threads: M42 Female Threads - Camera Side Threads: M42 Female Threads - Filter Size: Standard 2" - Weight: 5 oz. (140g)