A Zuma Delux Keyless Cylinder is a type of lock cylinder that is specially designed for bathroom use. It is made of brass and has a euro profile shape. It does not require a key to operate, but instead has a knob on one side and a hole on the other. It can be used with a Zuma Delux Dead Lock or a Zuma Premium Lockbody12. Some advantages of using a Zuma Delux Keyless Cylinder are: It provides privacy and security for bathroom doors, as it can be locked and unlocked from inside without a key. It has a durable and corrosion-resistant material and finish, and comes in various colors, such as SS Matt, Antique, Black, CP, and Rose Gold2. It has a standard size and shape that can fit most doors and cylinders.