AFP5 is a professional non-latching footswitch. The AFP5 sustain pedal is designed to work and feel just like the sustain pedal on an acoustic piano. The rubber on the surface prevents slipping while treading and the rubber on the bottom grip the floor and stays put while you play. The heavy-duty spring allows for better control and playing longevity. The black-looking and metal shell makes AFP5 a better choice for musicians.