The Ultra O's symmetrical rope baskets are ideal for assisted breaking devices, pulleys, swivels and shackles. They also give stable loading characteristics, as attachments can self-centre under load with minimal movement from the carabiner.
The Oval’s symmetrical shape prevents gear bunching up when racked, while it's Keylock nose prevents gear snagging when being removed from the carabiner.
The Oval also works well in rigging. Round baskets let attachments self-centre, allowing the carabiner to slide - rather than jump - into position when loaded. The basket shapes are compatible with devices such as pulleys and modern assisted breaking belay devices.