DIY-friendly design. No complicated tools are required; installation is completed with just a hex nut and a screwdriver. The 90° rotation unlock function is smooth and doesn't get stuck. Suitable for office workers, school administrators, and factory warehouse managers to replace or maintain locks themselves, making lock cylinder replacement easy and quick. *Orders cannot be shipped on weekends and holidays. *Orders placed by 3 p.m. on weekdays will be shipped the same day.