【 and practical 】 Made of material, the UPVC alloy door security lock with key is convenient to use. Easy assembly and use: The strip jammers are easy to assemble and use, providing increased security. Simply switch to the switch to secure the handle to the frame for easy installation. Crowbar protection: Ideal solution for the common theft technique called "crowbar". The frame lock effectively holds the frame mechanism in place for improved security. 【Versatile Color & Material】Available in black and white, it is made of aluminum alloy, ensuring durability and strength.