H&Y Filters EVO-Series Magnetic Step-Up Ring 55-77mm 11x14 H&Y Filters HD MRC Ultra-Slim

H&Y Filters HD MRC Ultra-Slim Circular Polariser (CPL) Filter - 67mm

Liquid Volume: 2x 50

and another screw beneath the cold shoe for accessories

The 67mm K9 Magnetic Adapter Ring from Kase features a 67mm rear thread that allows attaching to 67mm filter rings

H&Y Filters HD EVO-Series Magnetic White Mist (1/8) Filter & Adapter Ring - 67mm

H&Y Filters EVO-Series Magnetic Step-Up Ring 55-77mm 11x14 H&Y Filters HD MRC Ultra-SlimH&Y Filters EVO Series Magnetic Step Up Ring 55 77mm Key Features For 77mm Screw On Filters Use 77mm Filters on 55mm Lens Corrosion Resistant Anodized Aluminium The EVO Series Magnetic Step Up Ring is an essential accessory for photographers who use lenses with different thread sizes. This step up ring allows you to use EVO filters and any other optical filters on lenses of varying diameters, ensuring compatibility and flexibility. The magnetic design