For some extra safety - the OK Ball Lock from Petzl! This carabiner comes equipped with a Ball-Lock system, which requires three motions to open the carabiner and thus reduces the risk of accidental opening. The green dot indicates wen the gate is locked. The oval shape of the carabiner makes it easy to load pulleys, ascenders and progress capture pulleys - perfect for extra safety on big walls and alpine climbs. The H-profile provides better grip, even when you have gloves on, and the keylock nose will prevent snagging on the rope. The Petzl OK Ball-Lock is perfect for anyone who prefers to err on the side of caution!