CUSTOMIZE YOUR PADLOCKS TO MEET YOUR SPECIFIC NEEDS WITH THE MASTER KEYED SYSTEM . A MASTER KEY OPENS ALL THE LOCKS IN THE SYSTEM ALTHOUGH EACH LOCK HAS ITS OWN UNIQUE KEY ALLOWING TAILORED SECURITY SOLUTIONS FOR YOUR APPLICATIONS. NOTES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" ALL PADLOCKS WITH A MASTER KEYED SYSTEM ARE NOT RETURNABLE MASTER KEYED LOCKS MAY ONLY BE PURCHASED THROUGH AN OFFICIAL BUSINESS OR ORGANIZATION ACCOUNT PLEASE INDICATE IF THE LOCK IS A NEW OR AN EXISTING KEY SYSTEM BY SELECTING ""LOCKER LOCK"" IN THE DROP-DOWN FIELD. IF YOU HAVE AN EXISTING KEY SYSTEM THE MASTER KEY NUMBER MUST BE SPECIFIED IN KEY NUMBER FIELD. MASTER KEY SOLD SEPARATELY. ORDER THE STRONGA HREF""HTTPS//WWW.GLOBALINDUSTRIAL.COM/P/STORAGE/LOCKERS/LOCKS/K6000-CONTROL-KEY-FOR-5-PIN-CYLINDER-PADLOCKS"" TITLE""GLOBAL HAS A WIDE VARIETY OF LOCKS MASTER LOCKS LOCKERS LOCKS COMBINATION LOCKS PADLOCKS BIKE LOCKS CABLE LOCKS AT GREAT PRICES.""MASTER KEY HERE/A/STRONG.