A standard drum rudiment in the category of roll rudiments and the sub-category of double stroke open roll rudiments that creates a sustained sound on a percussion instrument by rapidly alternating two strokes from each stick. The sticking pattern (shown below) is the accepted method of producing a double stroke open roll and consists of two strokes from each hand (i.e. RRLL) for a total of four strokes repeated over and over.

	Double Stroke Open Roll