Simple and convenient installation will not waste your time and energy. The wide range of applications allows it to be used in a variety of scenarios. Professional and exquisite workmanship makes it very wear-resistant and anti-rust. High corrosion resistance and robustness make it can be used for a long time. Made of zinc alloy material, it is very durable to use. There are two specifications for you to choose from: S, L. It is suitable for an array of housing or glass display cabinet/showcases metal construction. And it keeps your valued pet inside its vivarium or terrarium and to keep the un-wanted out. Item Name: Window Lock Material: Zinc Alloy Product Model: S, L Key Type: Not Open Features: Sturdy, Wear-resistant, Easy to Install Surface Treatment: High Anti-corrosion Flashing Silver Color Treatment Size Details: S: 14cm x 3cm x 2.6cm/5.51" x 1.18" x 1.02" (Approx.) L: 14.3cm x 3.2cm x 3cm/5.63" x 1.26" x 1.18" (Approx.) Installation Thickness: 0.5cm-0.8cm/0.2"-0.31" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Window Lock 2 x Keys 2 x Washers