This Maximum Strength Cam Lock is specifically designed for recessed 1 inch roller doors. Made from heavy-duty cast grade 30 steel, it ensures optimum strength and durability. The pins are mechanically fastened in place, providing added security. With an extra thick padlock provision, it offers great security. The spring-assisted lock eliminates door bounce, while the stainless steel spring ensures long-lasting performance. The trapped handle cannot be pulled out to bypass the keeper, resulting in a tamper-proof lock. Additionally, it can be used as a lift handle in the open position, making it practical for various door applications.