Combination locks Benefits of combination locks The C4 combination lock is ideal for use in schools and workplaces. The simple design and comfortable, easy grip make them an ideal solution for environments around children and students. Without the need for keys and the added risks of losing and replacing them, they are also cost effective. Due to the design, they ensure they can be retro fitted onto almost all existing lockers. Patent technology Many ways to unlock Elegant colors Always have a backup The security technology is unique to this lock and is patent protected. Combination lock offering a maximum of 10,000 possible combina-tions. Lock rotations possible are 90° Right opening / Left closing. Black and White finishes are available as standard. A reset key is also available which allows you to reset forgotten codes. Well built product Made from high quality materials, with a choice of finishes that provide a strong and robust product that you can rely on. Return Ronis C4 Ronis C4S