Y300C/63/127 - Yale Black Series Hardened Steel Closed Shackle Padlock (Molybdenum Shackle) -Hardened steel body with shackle shroud -Rekeyable cylinder -Quick change shackle -Double locking shackle -Ball bearing locking mechanism Body material: Hardended Steel/Black Shackle material: Molybdenum Steel No. of padlocks: 1 No. of keys: 3 Security grading: 8 Corrosion rating: Exposed Body width MM: 63 Y90SS/45/129 - Yale Black Series Marine Grade Stainless Steel Padlock 48mm Y300SS/63/127 - Yale Black Series Marine Grade Stainless Steel Padlock 63mm Y90S/45/129 - Yale Black Series Hardened Steel Padlock (Molybdenum Shackle) 48mm