H&Y Filters Adapter Ring for 100mm K-Series Filter Holder - 55mm Delta End Pockets They have 82mm threading on

They have 82mm threading on the rear and front and can be screwed onto your lens

front fall: 37mm

It remains locked when not in use and when it is needed it can be unlocked with a simple twist of the fingers

Compatible with: JOBO 04045 Center Core Tube for the 1530/2550 Extension Module

Billingham Luggage Tally - Tan Leather / Brass Buckle

H&Y Filters Adapter Ring for 100mm K-Series Filter Holder - 55mm Delta End Pockets They have 82mm threading onH&Y Filters Adapter Ring for 100mm K Series Filter Holder 55mm Key Features 55mm Ring for H&Y Filter 100mm K Series Filter Holder This 55mm Adapter Ring for 100mm K Series Filter Holder from H&Y Filters is an aluminium adapter ring that allows the K Series 100 Magnetic Filter Holder to be attached to a lens with a 55mm front filter thread. Specifications Compatibility: H&Y Filters K Series 100 mm Size: 55 mm Ring Material: Aluminium In the Box H&Y