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, a through hardened steel alloy shackle to resist saw attacks and \'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: 81 mmOverall depth: 31 mm Shackle width: 25 mm I.D.Shackle height: 18 mmShackle Dia: 11 mm