Features:- 12.7mm Hardened Performance Steel Shackle- New Patent-Pending Hardened Double Deadbolt Design Gives Additional Protection Against Twist Attacks- High Security Disc-Style Cylinder Is Pick And Drill Resistant- Includes 2 Stainless Steel Keys, With Ergonomic Design To Reduce The Amount Of Torque, And Keep Them From Bending Or Breaking- New Dust Cover- Includes Flexframe-U Bracket Providing Convenient Multi-Location U-Lock Transport- Protective Vinyl Coating- 2 Stainless Steel Keys- Key Safe ProgramSpecifications:- Dimensions: 4 X 9 (10.2cm X 22.9cm)- Weight: 2.9 Lbs (1.32 Kgs)