Dakine Twist Control System helps to lock down footstrap tabs and reduce twist. Works with all DaKine footstraps and most others. The 3 hole washer is compatible with 1 or 2 screw attachment systems and it ensures that your footstrap with not deform around the attachment bolts and minimizes how much they are able to rotate. They are very low profile and will add longevity to your footstraps. Compatible with all Dakine Footstraps.