The Master Lock Excell™ Titanium Reinforced Padlocks are made with cutting edge technology to deliver unprecedented security They feature tough cut patented octagonal boron carbide shackles which are 50 tougher to cut than hardened steel This stainless steel padlock with Titanium reinforced body is a durable and solid padlock with the added security of a shrouded shackle that makes it very tough against prypull attacks Supplied with 4 keys and a Lifetime Warranty against mechanical failure Suggested uses gates sheds storage units fences containers and chains Specification Shackle Diameter 8mm Internal Shackle Diameter 22 x 24mm Cylinder 4-pin tumbler