The Series 2A is the range of pin tumbler cylinder Ø 17 mm locks, inherited from the centenary experience of the Cas. The quality and robustness of the materials constitute a guarantee that lasts over time. The 2A31 model (former art. Cas 1/s a) is a lock for universal application with body in die-cast, available in different lengths (from 20 to 30 mm) and bolt variants for application on right-hand or left-hand door.