E-Drum Split ROLAND TD Series Y-adapter for connecting two electronic drum pads to one trigger input built-in resistor to delay the signal flow from one of the pads fits Roland TD-9, TD-11, TD-15, TD-17 and TD-27 compatible with EFNOTE, Alesis Crimson and Alesis Strike modules very durable really light very flexible 24-carat hard gold contact surface for lossless transitions.