The Clamp-On Lens Adapter Ring Set from Cavison comprises two clamp-on rings: an 85 to 95mm step-up ring (CR95-85) and an 85 to 75mm step-down ring (ARP375).
Cavision ARP375 Adapter Ring for Lens Accessories - 85mm Stepping Down to 75mm
The Cavision ARP375 is an adapter for lens accessories; this device adapts a 85mm lens diameter to a 75mm lens accessory.
Cavision CR95-85 Clamp-On / Step Up Ring - 85mm Clamp to 95mm Filter Thread
The Cavision CR95-85 clamp-on, step-up ring allows a camera lens with a 85mm outer diameter to step up to a 95mm filter. This device works with the following wide angle attachment: Can be used on any Cavision wide angle lens with 9586 back-mount.