Made From High-Quality Materials, Such As Stainless Steel Or Zinc Alloy, For Added Strength And Corrosion Resistance.Designed For Upvc Windows And Doors.Lever-Style Operation Makes It Easy To Lock And Unlock The Window Or Door.Upvc Window Lever Door Locks Provide An Additional Layer Of Security, Making It More Difficult For Intruders To Gain Access.Made From High-Quality Materials, These Locks Are Designed To Withstand Regular Use And Harsh Weather Conditions.