This key blank fits various (not all) products by the following manufacturers

• Action
  
• Various padlocks
• Barrecrafters
  
• Various ski racks and car top carriers
• Bauer
  
  • Various products, including T handle locks, using key codes between:
    
    • CR500-CR999
• Detex
  
• Various alarm box locks
• Firelite
  
  • Various alarm box locks using key codes between:
    
    • B001A-B783A
    • B135A
• NCL, National Cabinet Lock
  
• Various products using key codes between:
  
  • B001AR-B783AR
• Notifier
  
  • Various alarm box locks with keys stamped B135A
    
• Square D
  
• Yale
  
• Various products, including T handle locks, using key codes between:
  
  • CR500-CR999