Clear Bass Drum Head: This bass batter head features an outer 7mil ply and an inner ply of 10mil film, plus an adjustable damping system with EMAD foam rings that allow you to adjust the head’s attack, focus, and sustain Optimum Sound Quality: A Level 360 collar allows the drum head to seat itself properly for ease of tuning, extended pitch range, and optimum quality of sound; Available in sizes 18” to 26” with multiple thickness and coating options Heads for the Complete Kit: Be prepared for your next big performance or practice session with Evans, offering a wide range of heads for snare batter, snare side, tom batter, tom reso, bass batter and bass reso Superior Design: Shop our whole collection of products including drumheads, drum pads, drum and cymbal mutes, drum keys, stick bags, mallets, snare wires, stands, dampers and more Evans: Our drumheads and percussion accessories are designed to help drummers play at the highest level and made to fit the needs of every style of drummer