OXAN Steel Carabiner Screw Locking Black Ascent Descent Rubber Boot on "C" and safe manner Rubber Boot on "C" head Owners Manual and to limit the risk of it flipping Specifications Material(s): steel particularly suitable for setting up anchors or for connecting to metal structures Oval symmetrical shape allows optimal positioning of the carabiner Easier handling: fluid interior design limits the risk of having a catch point and facilitates rotation of the carabiner Keylock system to avoid any involuntary snagging of the carabiner H cross section: ensures an optimal strength weight ratio protects markings from abrasion Two locking systems available: SCREW LOCK: the manual screw lock with red band provides a visual warning when the carabiner is unlocked TRIACT LOCK: automatic locking with triple action gate opening May be used with a CAPTIV positioning bar to favor loading of the carabiner along the major axis