Series 33 is the range of radial pin tumbler cylinder locks, anti-drilling and anti-picking. With over 250,000 different combinations, tubular key in nickel plated steel and 7 stainless steel spines. Series 33 guarantees a valid alternative to traditional closing systems, covering a wide range of possible applications. The 3355 model is a switch lock, with a threaded body, available in different functions, 7 A – 220 V