Four trailer locks keyed alike. Includes 8 keys KEYED ALIKE - One key opens all four locks. We can key multiple sets to the same key number. If multiples are ordered we will automatically key them all the same. Each lock comes with two keys, for a total of eight keys. PLEASE UNDERSTAND - each lock comes with different looking keys but thay are the same key code. GUARANTEED that all locks will be keyed the same or we will fix the problem at our expense. COUPLER LOCK FEATURES: This lock protects unattended trailers and guards against tow-away theft. Fits 1-7/8", 2", & 2-5/16" couplers by Reese, Fulton, Valley, Atwood, Shelby, Putnam, Hammerblow, Dutton, Lainson, and UFP. Rekeyable - for rekeying , see your authorized Master Lock locksmith. Advanced locking mechanism resists picking and prying. Simple installation and removal. Resists rust and corrosion. PADLOCK FEATURES: 7/8" (21mm) Armored Shackle Guard blocks bolt cutters. Keyed Alike Revolving, case-hardened steel shackle sleeve resists cutting and sawing. Removable shackle sleeve. Sleeve off - Secures coupler latches. Sleeve on - Works best with hasps. Precision pin tumbler mechanism resists picking. Limited Lifetime Warranty. If only wanting TWO #37 padlocks, and not three, we will credit you back $11.50 after the transaction is paid for. Please indicate the adjustment after the purchase via a message to seller. We will acknowledge your request. If only wanting TWO #37 padlocks, and not three, we will credit you back $11.50 after the transaction is paid for. Please indicate the adjustment after the purchase. Master Lock Stainless Steel Padlock SET OF 3 Keyed Alike Locks - Model # 37KA-3 with ONE Universal Trailer Coupler Lock Keyed Alike Lock - Model # 379KA. Complete trailer security needing only one key. This lock combination listing comes with 8 keys. COUPLER LOCK FEATURES: This lock protects unattended trailers and guards against tow-away theft. Fits 1-7/8", 2", & 2-5/16" couplers by Reese, Fulton, Valley, Atwood, Shelby, Putnam, Hammerblow, Dutton, Lainson, and UFP. Rekeyable - for rekeying , see your authorized Master Lock locksmith. Advanced locking mechanism resists picking and prying. Simple installation and removal. Resists rust and corrosion. Matching colored keyhead for added convenience.PADLOCK FEATURES: 7/8" (21mm) Armored Shackle Guard blocks bolt cutters. Keyed Alike Revolving, case-hardened steel shackle sleeve resists cutting and sawing. Removable shackle sleeve. Sleeve off - Secures coupler latches. Sleeve on - Works best with hasps. Precision pin tumbler mechanism resists picking. Limited Lifetime Warranty.