The Delta-SPD Indoor Pedals are a dual-sided clipless pedal built for indoor training, with a Delta cleat on one side and an SPD cleat on the other. That split means two riders with different cleat systems can trade off on the same trainer without swapping hardware between sessions. A steel spindle and stainless steel platform back a composite body designed to hold up to repeated high-intensity intervals, and R and L engravings on the axle keep installation straightforward. What Our Gearhead(R) Experts Are Saying:"My training partner rides SPD and I ride Delta, so we just flip the bike between us mid-session without touching a wrench. That's the whole pedal solved in one design."