Single turn, 3 pins cylinder lock Interchangeable: With most common roller shutter locks available on the market. The reinforced bolt makes the roller shutter more resistant to attack. Available for motorized roller shutter Reinforced steel bolt: 2mm steel plated folded back on itself to reach overall 6.5mm thickness Straight, shifted, Lengthened bolt available with 6mm hole Solid brass cylinder Rustproof zinc plated box and components 3 brass key, chromed plated