The 95mm Swift Drop-in Filter Base Rack for REVORING from H&Y Filters is made to connect with accessories in the Swift System. This rack base is compatible with modules like magnetic variable adapters, excluding size 82-95mm and the magnetic screw-in adapter. You can also attach this base rack to REVORING Swift Vari. Adapter and the screw-in magnetic adapter for a wide angle lens. Use this base rack when you want to use only one drop-in filter.