Tradco Dual Function 5 Pin Key/Key Euro Cylinder
8589

Features:

• Master Key - Ability for a locksmith to assign a master key to
  access multiple locks.
• Dual Function - Key can be left in the cylinder on the inside of
  the door and still allow a key to be inserted and
  function the lock from outside.

Specification:

• Brand: Tradco
• Function: Key to Key
• Material: Solid Brass
• Cylinder: 5 Pin Euro
• Length: 100mm
• Finish: Satin Nickel