These are 6 used Pulse Percussion “Red Hots” drum triggers that are brand new. They include a ¼ in output and double stick tape to attach. The basic idea behind drum triggers is to effectively expand the range of sounds produced by a single percussion item. Attach the triggers to any percussion instrument, then plug them in to a drum module. From there, you can use the same drum to make an endless number of sounds come from the module. A 5 piece drum set can be played through a PA or computer as bells, chimes, tones, anything you want it to be. These are a very inexpensive way to hook up your drums to a drum module.