The Master Lock No. 4120 features a 20mm wide brass body to resist the elements and a 11mm tall, 3mm hardened steel shackle for excellent cut resistance. Ideal for cabinets & fences, the non-rekeyable 3-pin tumbler cylinder provides greater pick resistance. 20mm wide brass body provides resistance to the elements 11mm tall, 3mm hardened steel shackle Non-rekeyable, 3-pin tumbler cylinder provides pick resistance