The Drumfire DFP-VS1-NGL Wooden Vibra-Slap consists of a wooden chamber with internal vibrating metal nodes mounted on a metal hand bracket with a round wooden hand striker. Vibra-slaps have appeared in more recordings, soundtracks, and advertisements than any sound effect ever made. The Vibra-Slap was conceived as a durable replacement for the original delicate rattling horse jawbone. The DFP-VS1-NGL is ideal for percussionists and for helping children develop their sense of beat and rhythm.