MasterLock No. 6721 WO
High Security Padlock

• Hardened boron alloy shackle for superior cut resistance
  
• High security solid iron shackle shroud resists harsh physical attacks
  
• A perfect connection to your door security system, including Schlage®, Kwikset®, Yale® and 23 more
  
• No Key

Shackle Dimensions:
A=5/16", B=3/4", C=7/8"
(8mm, 19mm, 22mm)