The US-S is our SPD two way compatible clipless pedal. Its unique split binding system provides a stable hold while clipped in, yet requires minimal release and engagement force when “clipping in or clipping out”. Our design is excellent for beginners and those with limited flexibly. The detachable cage helps build confidence when starting out with clipless pedals by increasing the surface area of the pedal to make it easier to “Catch”. For mountain bikes, the detachable pedal helps protect the spring mechanism. The spring tension can be adjusted in three steps with the included 3mm hex wrench.The US-S is also available with our Ezy quick release axle system. The Ezy system allows for safe, rapid, and toolless removal of pedals for travel, storage, or flexibility. Particularly popular as an upgrade for folding bicycles, those who take their bikes on mass transit, or travel bikes with coupler systems our Ezy system can dramatical improve ride quality while saving space.