JJC RN-T01 40.5mm Conversion Lens Adapter & Lens Cleaning Cloth for Olympus Tough TG-1 TG-2 TG-3 TG-4 TG-5 digital cameras, replaces OLYMPUS CLA-T01 Designed for the Tough TG-1 iHs, TG-2 iHS and TG-3 iHS camera digital camera. The adapter enables the easy attachment of the FCON-T01 fisheye converter lens or the TCON-T01 tele converter lens for expanding your photographic horizons. Its mount accommodates any 40.5mm filter to further allow your creativity to flow. Front Mount Diameter 40.5 mm, Length 8.8 mm (0.34 inches) 100% replaces OLYMPUS CLA-T01 lens adapter