Master Lock - Hasp / Hidden Shackle (2) Keyed Alike Padlocks 770-6271NKA-2 w/ BumpStop Technology This listing is for two high security hasps and two keyed alike hidden shackle Pro Series padlocks and 4 keys. This tough, shrouded hasp/lock combo is ideal for vans, trucks, gates, and vending. To purchase multiple 2-packs keyed alike you need to purchase the locks via fulfilled by MERCHANT - HOW TO FIND: When you look at the listing there is a link showing the Other Sellers on Amazon. This is under the "add to cart button". Look for the 2-pack fulfilled by Merchant LocksChocksTiedowns. If you purchase any 2-pack multiple we will automatically key all locks the same. These locks feature the BumpStop Advanced Cylinder Technology. (For explanation - see more product details below). The lock and hasp is also available without the Bump Stop Technology, search 770 - 6271KA in our storefront. PADLOCK FEATURES: High security 6-pin hardened diecast zinc body is strong, durable and resist corrosion. "Bolt Cutter Tough" fully shielded hardened steel shackle offers impossible to cut and pry resistance features. Removable cylinder for replacement or re pinning. Lock dimensions (see secondary image) - A) 3/8 (10mm), B) 19/32 (15mm), C) 1-23/32 (44mm) Width 2-7/8 (73mm). HASP FEATURES: Solid steel powder coated construction. To install: Use hasp as mounting template. A 1/4" gap is recommended for most applications. Works only with the model 6271 Master Lock. Mounting hardware NOT INCLUDED. Six 3/8 carriage bolts (length determined by application), washers and nuts required per unit.