At Keys Keys our euro cylinders are available in nickel or brass and come in a variety of sizes. All euro cylinders come with 3 keys and a central fixing screw as standard. Our euro cylinders vary in security standard. We have standard cylinders or high security 3 star BSI cylinders which are anti snap, anti bump and pick. To upgrade the security of your door replacing the euro cylinder is easy. Just remove the screw located on the side of the door that secures the euro cylinder in place, then insert a key and turn slowly while pulling on the key quiet hard and the euro cylinder should pull through.