Brink's 50mm Laminated lock body and shackle is made of Grade 304 stainless steel for superior corrosion resistance. Perfect for outdoor applications where corrosion can ruin normal locks. Combined with the 2 -inch shackle length, this padlock is versatile in any extreme outdoor use. It also features a 4-pin cylinder that resists picking, steel locking bolts to resist prying or hammering and double bumpers that will reduce marring on surfaces like metal gates, doors, or coolers and storage boxes.