· Handle square 8mm 　
· Unlocking lever 　
· Bolt with 6mm hole is optional
· Single turn, 4 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
· .Reinforced steel bolt: 2mm steel plated folded back on itself to reach overall 6.5mm thickness

· Stright, shifted, Lengthened bolt available with 6mm hole
· Solid brass cylinder
· Rustproof zinc plated box and components
· 3 brass key, chromed plated