Shimano PD-M324 SPD Pedals are the ideal pedal for recreational riders who commute and tour. ONE SIDE FEATURES SHIMANO'S SIGNATURE SPD CLIP IN MECHANISM THAT YOU CAN PAIR WITH A VARIETY OF SHOES. THE SPD FEATURES AN ADJUSTABLE RELEASE TENSION SETTING SO YOU CAN MAKE IT LOSER OR TIGHTER ENTRY/EXIT WHILE THE OTHER SIDE FEATURES A GRIPPY PLATFORM STYLE PEDAL GREAT FOR FLAT SOLED SHOES AND BOOTS.