SV226 Filter Drawer Integrated Molding Anti-Light-Leaking Design for 1.25inch & 2inch Filter Mounted. Double Pair of Magnets, Compared with traditional screw rotation; magnet has stronger adsorption force; which is convenient to install and use. Two Filter Holders, Standard 1.25inch and 2inch filter holder; plug and play, easy to use; reducing repeated disassembly and installation steps in a dark environment. Compatible With 1.25inch & 2inch Filter Installation, Existing 1.25inch and 2inch filters can also be used; for beginners of p ography; save the budget for changing filter sizes. CNC Integrated Molding, The advanced processing can assure the quality; provide more accurate; consistent results; you can use it with confidence. Filter Drawer Thickness 21mm, The thickness is related to back length; back affects the quality of imaging; it limits the use of accessories and optical path length. Designed with the lock screw on the side of the filter drawer; the locking function is helpful on adjusting the tension to the ; which is a double insurance . The Parameters Of SV226 Filter Drawer Use With Telescope, Connect the telescope to the reducer and drawer filter; then connect the adapter to the camera. This SV226 filter drawer can use with SV550/SV503 OTA and F9198F/F9198K astronomy cameras. M42-M48 Adapter, Camera side thread is male; filter mounts thread is female; The filter drawer comes with the M42-M48 adapter to resolve the thread compatibility issue. The interface can help you use the adapter to connect cameras of different specifications. Plastic Dustproof Storage Box, The packaging is equipped with a plastic storage box to that accessories around the filter drawer can be stored. Q:What are the compatible specifications of SV226? A:SV226 filter drawer adopts integrated CNC molding and anti-light leaking design. It can compatible with 1.25inch & 2inch specifications filters on the market. Strong magnetic , prevent the filter from falling off. Q:What is the thickness of SV226? A:21mm Thickness.Thickness affects back length, which affects image quality and available accessory options. Color: Black Material: Aluminum Alloy Package Contents: 1 * filter drawer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.