Window locks: thickened aluminum alloy material, , suitable for all kinds of sliding windows and doors, effectively preventing accidents caused and unintentional opening of windows in winds. Window safety: fix window or door, from opening window randomly, thief, safe and stable. Window bars: non- rubber pad, safe and stable, can be used directly without drilling installation, metal anti-skid rubber pad, strong durability. Window well covers outside: fix window or door, prevent from opening window randomly, prevent thief, safe and stable. Window lock: thickened aluminum alloy material, durable, suitable for all kinds of sliding windows and doors, effectively preventing accidents caused by and unintentional opening of windows in strong winds. Color: Brown Material: iron Package Contents: 5 x Window lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.