1?��Wind and Anti Theft Design: The pole body is designed with rotatable blades, which can prevent wind blowing to close the window and shatter the glass. When opening the safety gap, ventilation and air exchange can be achieved. Locking the window sash can prevent children from opening the window, prevent falling accidents, and even prevent theft. 2?��Good Ventilation: When the window is opened to a safety gap of 15 centimeters, the window sash can be locked, and there is no fear of wind breaking the glass during ventilation 3?��Security Guarantee: High End Lock Body Design: Zinc alloy lock body surface paint design, with a wider range of applications. Lock keys of the same batch can be opened. 4?��Thickened Stainless Steel and Thick Fixed Base: Adopting 10mm diameter thick stainless steel rod body, more powerful. Thick stainless steel fixed base is protecting the safety of your family and property. 5?��High Strength: Stainless steel thickened rod body, sturdy and powerful, designed to prevent wind blowing on the window sash.