About this item:- Mounting style: mortise mount or facet mount- Lock style: hook lockGalvanized steel8mm - 5/16 hex instrument required to open and shut the lockFriction or facet mount ideas - may also help present an airtight and watertight sealThese heavy-duty snap locks mount behind or inside mating panels for concealed operation. Mounting could be executed from the outside of the panel. Positive locking and unlocking. Vibration and surprise resistance.Product packaging: 1 piece hook lock(Excluding any equipment within the demonstrate image)Note:1.Please enable 1-10mm error thanks to guide measurement.2.The coloration may have various because the difference display, pls understand.3.Please word the dimensions earlier than paying, thank you.