4PCS Window Locks for UPVC Windows, Restrictor Security 4PCS, White\nProduct Details\n--Window Safety Locks: High quality cable limiter, which limits the opening distance of doors and windows, is specially designed for the safety of little baby/children. Reduce the risk of children and pets falling from high windows. Window restrictor ideal for ensuring the safety of your child or pet\n--Durable Design: Stainless steel wire with double protective core. Tested to withstand a horizontal force of 100 kg. Window locks are resistant to wear and tear due to their anti-oxidant and corrosion-resistant properties. Window safety restrictors with keys are more secure than Glued Limiters\n--Quick Installation: an 18cm long wire rope with four steel screws, fixed with a screwdriver or drill bit. Once installed, it can be locked and unlocked within a few seconds using the equipped key\n--Applicable Places: Window safety lock is suitable for most types of windows and small doors. UPVC, wood, aluminy