The Roland KD7 is a rugged, cost-effective Kick drum trigger pad, designed for reverse mounting and equipped with a custom reverse felt beater. The unit allows the drummer to use his or her pedal of choice, and offers a high degree of dynamic response. The supplied metal mounting studs ensure immobility during performance. Features: Dynamic, velocity-sensitive Kick Drum mini-trigger for V-drums and other electronic percussion modules and drum machines All-metal construction, thick rubber trigger pad Reverse-mount design with custom reverse felt beater allows drummer to use favorite drum pedal 1/4" Mix In allows double-bass style drumming, standard 1/4" output Polarity reverse switch