HQRP Sustain Pedal for Casio CTK-2090 CTK-2400 CTK-4200 CTK-4400 CTK-2000 CTK-2080 CTK-2100 CTK-2200 CTK-2300 CTK-3000 CTK-3200 CTK-451 CTK-471 CTK-481 CTK-710 CTK-720 CTK-800 Keyboard + HQRP Coaster HQRP&reg; Sustain Pedal Piano Style plus HQRP&reg; Coaster; Connector: 1/4 inch; The pedal is made in piano-style. Has a specially designed lower rubber part allowing the pedal to stay in place while you play. For all electronic keyboards, synthesizers, tone modules or drum machines with 1/4" phone jack sustain-pedal input. 200 days warranty!