The SMD QR-1 Quick Release Heavy Duty speaker box terminal cup is a great solution to 2 common problems. One being that most terminal cups are very wimpy! Not this one! Rather than a very thin injection molded unit like most others use, ours has a 1/2" body and 1/4" thick flange milled from 3/4" PVC, this product should never crack or deform under pressure. The terminals we use are made of nickel plated n42 neodymium magnets, sealed with SMD Sunflash. They will never move OR leak! 100% Guaranteed not to "vibrate off" from any vibration of any sort. Of course we use only the best Dual 10ga 100% OFC speaker wire!
The next problem this product solves is of course, removability! If you live in a place you need to bring your box in at night, or perhaps to make room in the trunk for other items, now you can do it in a snap!