Underwriters Laboratories Listed Group 2 Mechanical Combination Lock.
Exclusive Brass and RED Aluminum Wheels with Patented DeadLoc Technology® Provide 1,000,000 Theoretical Combinations on 3-wheel lock and 10,000,000 on 4-wheel lock.
Each Individual Wheel Unit includes Two  independent Brass Locking Lever Arms with Patented DeadLoc Technology® that provides Unmatched Torque Resistance and Eliminates Combination Wheel Slippage.
Heavier Lock Body Construction than Sargent and Greenleaf® to provide Superior Strength and Durability.
Designed with a Longer Brass Locking Bolt–Standard, allowing more of the Lock Bolt to be maintained inside the Lock Case when the Lock Bolt is in the Locked Position.
Increased Locking Bolt Case Guide Surface Provides a Smoother Operation and Lock Bolt Stability.
Internal Relocker Trigger Secures the Lock Bolt in the event of a Burglar’s Punch Attack.
Exclusive Change Key Cover Boss Accepts a Sargent and Greenleaf® standard 3-wheel or 4-wheel change key and is designed to perfectly maintain the change key alignment during the combination changing procedure.
4-Way Drive Cam for mounting Right-Hand, Left-Hand, Vertical-Up or Vertical-Down.
Stainless Steel Spline Key.
The Lock Profile Conforms to the Industry’s Universal Footprint for ease of mounting for Retrofits and New Installations alike.
Exclusive Recessed Change key Boss Area on outside of cover allows use of optional Tamper-Plug.
Available in a wide range of Dial and Ring Designs in attractive finishes and functions, and will accept the Sargent and Greenleaf® Standard Dial and Ring Sets.
Mounting Hardware Kit includes;  short,  medium and  long Case Mounting Screws,  Dial Ring Mounting Screws,  Spline Keys,  Change Key and  Set of Lock Operating Instructions.