Y110C/30/115 - Yale Classic Series Outdoor Solid Brass Closed Shackle Padlock 30mm -Closed Shackle -Double locking shackle -Self-latching mechanism Body material: Solid Brass/Natural Shackle material: Hardened Steel No. of padlocks: 1 No. of keys: 3 Security grading: 2 Corrosion rating: Outdoor Body width MM: 30 YE1/20 - Yale Essential Series Indoor Brass Standard Shackle Padlock 20mm Y110/35/121 - Yale Classic Series Outdoor Solid Brass Padlock 35mm with Multi-pack Y110J/15/111/4 - Yale Classic Series Indoor Black Cover Brass Padlock 15mm with Multi-pack