1. Suitable for letterboxes, cabinets, furniture, and lockers. Features a chromeplated zinc housing with a thread diameter of 23.5 mm. Total installation length: approximately 22 mm (from collar to end screw). Installation length to locking tongue: 17 mm. 2. Universal cylinder serves as a replacement for letterboxes from Renz (manufactured up to 2006), Decayeux, and others with material thickness ranging from 1 to 2 mm. Adjustable locking latch at a 15° angle, with a closing distance of 90°. 3. Easy installation: Loosen the fastening nut and locking latch, insert the cylinder into the installation opening, attach the fixing nut, tighten, and mount the locking latch. This universal cylinder is a replacement lock for showcases, control cabinets, or mailboxes with material thickness of 12 mm. Made of strength, nickelplated diecast zinc, it is suitable for doors made of metal, plastic, or other materials.