Pro-Mark Bass Drum Mallets feature American hickory shafts with graduated lengths for improved balance, smooth-rounded handles for increased comfort and playability, and hard felt elliptical-shaped heads that produce a focused bass tone without denting the head. The AB1 Bass Drum Mallets are 14 3/8 long, and 1 1/2 in diameter. Recommended for 18, 20, or 22 Bass Drums.