A purposefully simple design, the Mag is a workhorse drop throw-off with a horizontal tension adjustment and smooth, easy-adjust action. It gets its name from a clever magnet that's integrated into the body of the throw-off. When the handle is in the up position, it won't release without a slight tug. Comes complete with gasket and all mounting hardware. Hole pattern also fits DW Delta throw-off. The innovative new 3P, three-position butt plate allows drummers to easily select three distinct preselected snare wire tension settings at the touch of a lever. It can be combined with just about any brand snare throw-off and snare drum. MAG Throw-Off mounting screw distance: 1 3/8" center hole to center hole. 3P Butt Plate mounting screw distance: 2" center hole to center hole.