The Mac's D-Vise makes those on-the-trail repairs easier and more effective. Simply slide the D-Vise into your receiver, pin it and you have a stout bench vise in the middle of nowhere! Operate it with a lug-wrench or socket wrench, or better yet, use the included handles that stows neatly on the side when not in use. Last, but not least, we've included a bottle opener. It seemed like the right thing to do.