The Roland RT-10K Acoustic Drum Trigger for kick drums is ultra-sensitive and about 10% smaller than its predecessor. Easier to position and more discrete. Features the latest trigger-sensing technology for improved response. The RT-10K easily attaches to wooden, composite, and metal bass drum hoops. Can be used with mesh heads as well as regular acoustic drumheads. Works directly with Roland V-Drums TD series, TMC6 Trigger MIDI Converter (442374), SPD-20 Total Percussion Pad (700214), and HPD-15 HandSonic Percussion Controller (441917). These accessory products in the preceding paragraph and the one to follow may be found in the customer accessory box. Trigger your whole set with the RT-10T (449930), RT-10S Dual Snare Trigger (449931), and the RT-10K Kick Trigger (449932).