1Select stainless iron material casting lock shell durable, prevent rust. 2Four protection, lock body using precision die-casting process durable, we carefully make every lock. 3Both inside and outside repair can be locked, thickened door button is not easy to break feel comfortable force good. 4Precision casting solid lock tongue, abrasion resistance, heat treatment plus hard break resistance durable. 5Glass door lock suitable for frameless class door, tempered class door.