The Yamaha Rack System and Drum Module For DTX522/32/62K Electronic Drum Kits provides you with the basis for assembling a Yamaha DTX electronic drum kit. The system consists of a RS502 steel drum rack and a DTX502 electronic drum kit trigger module. With these two components as a start, you can then attach a set of DTX electronic drum kit pads, or a custom combination of different pads to your liking. The pads attach to the steel drum rack using the included clamps. The pads then plug into the trigger module which allows you to select or import the samples you would like to use with the kit.