Featuring a new quick release design, the new M15 filter holder allows for fast filter installation and ease of operation. The new design allows the magnetic circular polarizer filter (CPL, not included) to be attached to the holder, which does away with annoying screw in threads, allowing for quicker setup times. With less time spent on assembly you have more time to spend on the creative process.The M15 150mm filter holder is made from aviation grade aluminum and PC materials, resulting in a strong and durable filter holder that is also lightweight. The M15 holder is designed to allow for use of up to 2 filters (150x150mm or 150x170mm) as well as the magnetic round CPL.Less ThanBrGreater ThanThe holder, coupled with the adapter ring, allows for quick and easy on the go use. Once assembled the complete system can be rotated 360 degrees.Less ThanBrGreater ThanBuilt to stand up to the rigors of outdoor landscape photography, the new Haida M15 filter holder system is an absolute joy to use!