PETZL William Locking Carabiners (2016) Black Large Size:Large The EASY SPIKE slip on cleats feature Color:Dewy Finish The EASY SPIKE slip on cleats feature 22 “molded in” carbonized steel studs for durable and permanent walking traction for employees that are faced with harsh outdoor ice and snow walking conditions functional reducing the weight of equipment the worker at height needs to carryEasier 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 carabinerH shaped cross section: ensures an improved strength to weight ratio protects markings from abrasionAvailable in three different locking systems: TRIACT LOCK: automatic locking with triple action gate opening BALL LOCK: automatic locking with triple action gate opening to limit the risk of it flipping and to keep it integrated with the device