I had bought a new stem, carbon version of what I already had. The Shimano mount band wasn't long enough. Decided this would eleminate ever having this issue again if any changes were to occur later. The box snaps right in and it looks better than a strap around the stem. It does what I need it to do and it looks great although maybe a little pricey.
Keeps everything secure and in place. Very convenient. Looks more organized. Highly recommend for Di2.
