Cavision Clamp-on Step-up Ring for 72mm Thread Lens to 88mm - Ring Rear: 75mm (ID) Clamp, Ring Front: 88mm

• This ring allows you to use a 88mm bottom threaded Conversion Lens or Filter, on a 72mm front threaded lens

The rear of this Clamp-on step-up ring is 75mm ID (inside dimension). It clamps on to the front of a lens that has an 72mm filter thread, stepping it up to accept 88mm add-on lenses or filters, as the front of the step-up ring is a 88mm ID thread.