【2 Way Installation】: With 2 Metal Plugs and 2 Punch-Free Metal Mounting Plates, One is Punching Installation(Hole Caps are Provided) and the Other is Non-Punching Installation(Fixed Plates are also Provided) 【2PCS Sliding Patio Lock】: These Universal Locks are Designed for Most Hinged or Sliding Doors and Windows, Used to Lock the Window or Limit the Window. 【Dual Usage】 With 2 metal hole plugs and 2 hole-free metal fixing plates, it can not only be used as window restrictor, but also lock the window 【Coming with Keys】: Each Sliding Door Locks are with 2 Keys.(The keys are Universal). Also These Sliding Patio Locks are Supplied with All the Security Fixing Accessories. 【Enhanced Security】 The patio door & window locks are designed for sliding doors and windows, good choice for your home security and baby safety, Manufacturer: Color