E-Drum Split ROLAND TD Series Y-adapter for connecting two electronic drum pads to a two-zone trigger input built-in resistor to delay the signal flow from one of the pads fits Roland TD-12, TD-20, TD-20X, TD-27, TD-30, TD-50 and Roland TD-9, 11, 15, 17, 27 Aux Trigger Split compatible with EFNOTE, Alesis Crimson and Alesis Strike modules very durable really light very flexible 24-carat hard-gold contact surface for lossless transitions.