Product Features Overview Keyed Alike - order multiple locks to open with the same key or order to match other locks with the W6000 cylinder Iron shroud protects shackle from bolt cutters ProSeries® Padlocks are designed for Commercial/Industrial applications 2-1/8in (54mm) heavy steel body withstands physical attack 3/4in (19mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance Dual ball locking mechanism resists pulling and prying High security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick Best Used For: Severe Use Security Gates & Fences Trailers, Trucks, & Towing Trailers, Vans & Moving Trucks Truck Doors Product Number: 6321KA Description: Keyed Alike, Commercial Boxed Packaging Shelf Pack Qty: 6 Master Carton Qty: 24 Body Width: 2-1/8in (54mm) Shackle Length: 3/4in (19mm) Shackle Width: 7/8in (22mm) Shackle Diameter: 5/16in (8mm) Color: Black The Master Lock No. 6321KA ProSeries® Shrouded Padlock, keyed alike – multiple locks open with the same key – features a 2-1/8in (54mm) heavy steel body that withstands physical attack and a 3/4in (19mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. Ideal for transportation and industrial applications, the iron shroud protects the shackle from bolt cutters and a dual ball locking mechanism resists pulling and prying. The high security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick. Customization Options Edge® Key Control Keying Options Laser Engraving & Custom Marking Shackle Options See More See Less