Premium Door Handle Chrome and white oak model. High quality Zamak, screwed rosettes. Six sides locking system key, 5 year warranty on mechanisms. Locking rosette option. The premium door handles are sold in a set. They consist of two lever handles and two rosettes that protect the door when the handle is operated. The square allows the articulation of the handle on the rosette and the movement of the bolt in the lock. The square section (square metal rod) is of 7mm. This piece of metal goes straight through the door.