Petzl corax set belt the petzl corax set is the perfect accessory for any climber the belt comes with a harness for a secure but comfortable fit to allow it to sit around your waist and store all your essentials the set comes complete with harness belay rappel device locking carabiner chalkbag and chalkball these are all the essentials needed when first heading out to climb petzl corax set belt belay rappel device locking carabiner chalkbag chalkball harness