Master Lock Magnum Outdoor Heavy-Duty Padlocks, 3-Pack Keyed-Alike M115XTRILF — Weatherproof, Hardened Shackle

Master Lock Magnum M115XTRILF is a 3-pack of heavy-duty, weatherproof keyed-alike padlocks designed to protect outdoor gates, sheds, trailers and job-site storage.

Built for prolonged outdoor use, these padlocks combine a laminated steel core with a thermoplastic weather cover and a hardened octagonal shackle to resist cutting, sawing and corrosive elements. The keyed-alike configuration means one key operates all three locks, simplifying access for property managers, contractors and homeowners who need consistent, reliable security across multiple entry points.

How does this lock hold up in rain, ice and salty conditions?

The M115XTRILF uses a dual-layer approach: a laminated steel body for strength plus a rubberized thermoplastic cover that seals out moisture and grit. The keyway is also protected, so freezing or grime buildup is much less likely to impair operation.

• Thermoplastic cover prevents water and dirt intrusion into lock body
• Keyway protection reduces freezing and jamming in cold weather
• Corrosion-resistant materials tolerate roadside salt and humidity

What makes this padlock difficult for thieves to defeat?

Security features focus on the weakest attack points: the shackle and the locking mechanism. The octagonal hardened shackle resists bolt cutters and sawing, while a dual ball bearing locking system adds pry and pull resistance for stronger physical defense.

• Hardened octagonal shackle limits cutting and sawing effectiveness
• Dual ball-bearing locking reduces prying and forced-entry risk
• 4-pin cylinder deters common picking attempts

Can one key open all three padlocks, and what keys are included?

Yes — the three padlocks in this set are keyed alike, so a single key opens each lock for quick access without juggling multiple keys. The package includes two keys, allowing immediate use and a spare for backup or a second user.

• All three locks share the same key code for simplified access
• Two keys supplied per set for convenience and redundancy
• Ideal for managers, crews or rental properties needing shared entry

What are the size and application possibilities for these locks?

Each lock features a compact laminated body and an extended shackle option for flexible fitment around hasps, chain links or latches. The dimensions make them suitable for common outdoor uses while keeping the shackle sturdy enough for heavy-duty needs.

• Lock body about 1-7/8 in. (48 mm) wide for compact strength
• Shackle: 5/16 in. (8 mm) diameter, 1-1/2 in. (38 mm) length for varied fit
• Works for gates, fences, job boxes, trailers, sheds and storage units

Who is this for? The Master Lock Magnum M115XTRILF 3-pack is aimed at contractors, property managers, rental operators and homeowners who need dependable outdoor security without frequent replacement. If you manage multiple access points, work in environments exposed to weather or salt, or require a simple keyed-alike solution for teams, these padlocks offer durable, low-maintenance protection backed by a lifetime guarantee.