Minimal Drag. Maximum Glide – Cover and screws included Designed and engineered for expert riders seeking advanced performance in downwind and freefly wing riding, it also excels for competitors and long-distance gliding enthusiasts. Compatible with Ultra HA, SILK, and ENDURO foils for a versatile riding experience. When paired with our Ultra HA, SILK, or ENDURO foil, the Stab Glide 41 is sure to elicit a “wow” effect and deliver the ultimate gliding sensation that riders crave.