Chase CSP-01 Universal Sustain Pedal with polarity switch. This Classic-Style Pedal Works With Casio, Yamaha And Any Other Keyboard Or Digital Piano. Also the 1/4 inch plug is an angle one so it's neat and convenient to use and the lead or cable is 6 feet long. The polarity switch is very handy because you got options when using the pedal on different keyboards as well as different computer software or program.
First hand experience, it's very responsive. It feels durable. Lightweight to carry. In short, a reliable and functioning sustain pedal.
Here's the test: