Evans 13" Hydraulic Black Drum Head 747 it features DW's patented Folding

it features DW's patented Folding Spring-release Footboard

while the para-clamp provides a quick and firm grip on the bass drum hoop

or blocks easily with the Gyro-Lock Tilter's built-in percussion holder

this innovative model puts out a softer

Evans 13" Hydraulic Black Drum Head 747 it features DW's patented FoldingEvans Hydraulic series features two plies of thin film offering maximum durability, a fat, deep and short sound pioneered by early 70's rock and roll. Hydraulics are famously easy to tune, making them a perfect fix for troublesome drums and players with little tuning experience. Available in glass, black, blue and red.