The Polar Pro BaseCamp Stage 3 Expansion is part of Polar Pro's incredibly lightweight matte box system. This kit includes a Stage 3 adapter and Stage 3 hood which are vital additions to the system. Like the wider kit, these additional sections have a completely tool-less operation, meaning you can use, install and remove without the need for any tools. This streamlined operation makes this kit ideal for on-the-go videographers and filmmakers. The use of aluminium in the frames of each filter and the wider system makes for increased durability and usability, as well as removing any worry of fingerprints or scuffs during handling.