Size 4 Inch Type Centre Head Finish Matt Usage/Application Door Fitting Country of Origin Made in India An SS door tower bolt is a sliding-bolt latch made of stainless steel, designed to lock doors (or windows/gates/cabinets) securely by sliding a metal rod into a bracket. Its stainless steel construction gives rust resistance, durability, aesthetic finish, and suitability for indoor and outdoor use. Depending on size and finish, it’s versatile — from small cabinets to main house gates.