https://www.bhphotovide
Specs:
Holder for Filters 100mm-Wide, 2mm-Thick
Slots for 3 Rectangular Filters
Edge-Only Grips for Rectangular Filters
Includes Circular Polarizer Filter
Holds 3 Rectangular & Polarizer Filters
Rotates 360°
Circular Polarizer Rotates Independently
Aluminum-Alloy Construction
Leatherette Pouch