The M1b presents some weight on the head to help shorten the lower frequency hum and never sticks to the head unlike tape or gels. You can dampen in a snap or disengage even faster with the on/off magnet feature. Works with triple flange hoops, die-cast, s-hoops, angel hoops, true hoops, brass hoops, and 1/4" wood hoops.

Leather thickness varies between 1.5mm to 2mm.