Corbin Russwin DL3011 Deadlock, Cylinder x Blank, L4 Keyway, Keyed Random, [2] Change Keys, Non-Handed. 

Function: Cylinder x Blank

By key one side only; opposite side blank 

DL3000 Series Cylindrical Deadlocks

• Handing: Non-handed, except DL3017, which is handed and field reversible.
• Door Thickness: Standard - 1-3/4" (44mm) - 2-1/4" (57mm). Optional door thicknesses are available; see Quick Codes.
• Backset: Standard - 2-3/4" (70mm); Optional - 2-3/8" (60mm)
• Front: Standard - wrought brass or bronze, 2-1/4" (57mm) x 1-1/8" (29mm). Accommodates flat doors and doors beveled 1/8" (3mm) in 2" (51mm).
• Deadbolt: Zinc diecast hardened steel insert. 1" (25mm) throw, 5/8" (16mm) wide x 3/4" (19mm) high.
• Strike: Standard - 2-3/4" (70mm) x 1-1/8" (29mm). Optional strikes and wrought boxes are available
• Cylinder: Brass, 6-pin, L4 keyway, Keyed Random. Security cylinders are optional; see Quick Codes.
• Keys: Two nickel silver standard.
• Keying Features Available; Master keying; Construction master keying; 7-pin (FC) conventional; Interchangeable core (IC); Security; Security (IC); Visual key control; Concealed key control; Pyramid (FC); Pyramid (IC)
• Warranty: One-year limited.