【STURDY】The sliding glass door security bar is made of 1" diameter black painted metal, which is stronger and more durable than 3/5" window safety bars, less prone to damage and long-lasting,【A variety of adjustable 】 the patio door security bar with a total length of 50inch can be freely stretched and adjusted between 17.7-50.5inch to perfectly adapt to various lengths,【Non-slip end design】The sliding door stop is designed with a rubber tip to increase friction and fix it with double nuts to adjust the tension, not easy to fall off, no drilling required, easy to install, and will not damage the door frame. You can use it with confidence,【Widely used】This sliding door security bar can be used as a sliding door lock to maintain the safety of your pet and family, and it can also be used as a window security bar.,【Premium service】If you have any questions about our door and window rod, you can contact us, we will reply you within 12 hours