Compatibility

Filter Holder with 2mm Filter Guide Blocks: Accepts up to One Kase 90mm Magnetic Filter Along with up to Three 100mm Wide, 2mm Thick Filters
Filter Holder with 1.1mm Filter Guide Blocks: Accepts up to One Kase 90mm Magnetic Filter Along with up to Three 100mm Wide, 1.1mm Thick Filters
Adapter Rings: Connects Filter Holder to Lenses with 77 or 82mm Front Filter Threads
Step-Up Rings: Connects 82mm Adapter Ring to Lenses with 67 or 72mm Front Filter Threads

Material

Aluminum Alloy (filter holder)
Steel (adapter rings)
Aluminum Alloy (step-up rings)
Multi-coated Schott B270 Superwhite Glass (circular polarizer filter)
with a 2x (circular polarizer filter, +1 stop, filter factor, steel filter ring)