Master Lock 4NKD Brass Padlock With Bump Stop 

• Commercial Grade Padlock Features Protection from Drilling & Prying
  
• 1-9/16" Wide Reinforced Laminated Brass Body for Superior Strength
• 3/4" Hardened Steel Shackle for Extra Cut Resistance
• Dual Ball Bearing Locking for Maximum Pry Resistance
  
• Non-Rekeyable, 4-pin W1 BUMP STOP Cylinder Helps Prevent Lock Picking
• Keyed Different - Each Lock Will Come With its Own Set of Keys, All Sets Different
  
• Specs_Width: 1-9/32" Wide; A: 9/32" (7mm); B: 3/4" (19mm); C: 5/8" (16mm)
  
• Best Used For: Construction Sites & Equipment; Industrial Storefront and Business Gates and Fences, Tool Cribs; Vending Machines 

For 4NKD Extra Cut Keys