| Pick Resistance | 4-pin cylinder | | Dual ball bearing locking mechanism, Four-pin cylinder | | 4-pin W1 cylinder, BumpStop Advanced Cylinder Technology | | 4-Pin cylinder, Dual ball bearing locking | 5 spool pin tumbler, BumpStop Advanced Cylinder Technology | | |
| High Security Features | 4-pin cylinder, Dual ball bearing locking, Tough-Cut octagonal boron-carbide shackle | BumpStop Advanced Cylinder Technology, superior pry resistance | Dual ball bearing locking mechanism provides maximum pick and pry resistance, Four-pin cylinder, Tough-Cut octagonal boron-carbide shackle | Anti-Drill, Cut Resistant | BumpStop Advanced Cylinder Technology, Cylinder Pins: 4, Dual locking levers provide extra pry resistance | | Cylinder Pins: 4-Pin, Dual ball bearing locking, Tough-Cut octagonal boron-carbide shackle | 5 spool pin tumbler cylinder for added pick resistance, BumpStop Advanced Cylinder Technology, Cylinder Pins: 5, Dual ball bearing locking mechanism resists pulling and prying | | Double bolted disk mechanism, protective rotating keyhole cover |
| Outdoor Use Suitability | Indoor & Outdoor Use | Yes with details: Offers a higher level of weatherability and security for outdoor use | Indoor & Outdoor Use | | Indoor & Outdoor Use | | Indoor & Outdoor Use | All-Weather / Harsh Environment Use | Yes, UV resistance and waterproof | |
| Master Lock Innovations | Dual-Armor construction, High Security Locking Mechanism, Tough-Cut octagonal boron-carbide shackle | BumpStop Advanced Cylinder Technology | | | BumpStop Advanced Cylinder Technology | | | 5 spool pin tumbler cylinder, BumpStop Advanced Cylinder Technology, Dual ball bearing locking mechanism, Pro Series Weather Tough cover | | |
| Locking Mechanism Type | 4-pin cylinder, Dual ball bearing locking | Dual-ball bearing | Dual ball bearing locking, Four-pin cylinder | | Double Locking, Pin Tumbler | | Dual Ball Bearing Locking, Pin Tumbler | Dual ball bearing locking, Pin tumbler | Pin tumbler cylinder | Disc locking mechanism |