Y110J/15/111/4 - Yale Classic Series Indoor Black Cover Brass Padlock 15mm with Multi-pack -4 padlocks - same key fits all -Protective black cover -Single locking shackle -Self-latching mechanism Body material: Solid Brass/Black Cover Shackle material: Steel No. of padlocks: 4 No. of keys: 4 Security grading: No Rating Corrosion rating: Indoor Body width MM: 15 Y110J/30/117/2 - Yale Classic Series Outdoor Color Brass Padlock 34mm with Multi-pack (Pink/Blue/Orange) YE1/25 - Yale Essential Series Indoor Brass Standard Shackle Padlock 25mm Y110/30/150 - Yale Classic Series Outdoor Solid Brass Long Shackle Padlock 30mm with Multi-pack