MusicNomad B FILE Fret Beveling File (B File) with 23° & 3° File Angles electronicdrums Record continuously for over 15 purple sunburst Record continuously for over 15 hours with just 2 AA batteries or extend your recording time indefinitely with the optional AD 17 AC adapter It has been designed to cut through a dense and heavy band but still have great note articulation with chords The fully adjustable and replaceable high carbon steel file includes a double cut side and single cut side durable Acacia wood ergonomic handle is shaped with a curved radius underside and is wide enough to lay centered across the entire fretboard