ABUS Diskus 26 series padlocks have a pin tumbler cylinder with anti-pick mushroom pins, a solid lock body which resists drill, pull & manipulation attacks, and a through hardened steel alloy shackle to resist saw attacks.\'Deep Weld Technology\' which offers maximum case strength. Where to use it: High security requirement in severe weather conditions The shackle is manufactured from hardened steel alloy and is protected in a stainless steel body. Key operated, key retaining (a key is needed for locking. Lock retains key until locked) The anti-cut plate provides 360 degree protection from sawing while a top quality welded seam secures against impact attack. Overall diameter: 71 mmOverall depth: 30 mm Shackle width: 19.5 mm I.D.Shackle height: 17 mmShackle Dia: 10 mm