DescriptionThis is a set of 4 sets of Multifunctional Window Shifting Lock. To prevent sudden closure of doors and windows or children's movement. lock can be set to anormal state, if not necessary, canbe set to a normal closed state.Feature- Color: Silver. - Material: Aluminum Alloy. - Size:5.85x2.6x1cm. - No harmful substances testednon-toxic and tastelessmeeting the standards of use. - Ultra light viscosity,easy to clean. - Safe and tasteless environmentally friendly and durable. - To prevent sudden closure of doors and windows or children's movement. lock can be set to anormal state, if not necessary, canbe set to a normal closed state. -Strongfirmness, manual opening, to avoid automatic fall off and anti-lock, ultra-thin design.