Knob Cylinder / Kunci Silinder Knob (Computer Key) Features amp; Specification: • High quality security cylinder. • Maximum security, with pick-resistant pins and hardened materials. • Ultra heavy duty, passed 100000 test cycles. • For high frequency of use such as for public doors in office buildings. • High resistance against rust and corrosion. • Knob thumbturn on one side. • Dimple key (computer-key) on the other side. • Master key system available. • 25 Years Mechanical Warranty. • Designed according to European standards. • Colour: Satin Nickel. Materials: • Shell amp; Plug: Hardened brass for durable key-way. • Pin: Brass. Hardened. 6 pick-resistant pins for extra security. • Cam: High carbon steel, strong and durable. • Key: Brass computer-key, nickel plated. 5 keys included. • Thumbturn: Brass.