Sturdy Construction: Crafted from industrial-grade non-conductive nylon and corrosion-resistant stainless steel cable shackle with a PVC vinyl coating, these locks are designed for heavy-duty industrial applications. Reliable Engineering: Equipped with a high-grade brass core cylinder and a key retention feature that ensures the padlock is never left unlocked, providing peace of mind in safety-critical settings. Multilingual Identification: Each set includes 2 sets of labels in English, Spanish, and French, featuring "Danger Locked Out Do Not Remove" on the front and a writable space on the back for customization. Keyed Alike for Convenience: The locks are keyed alike in Group A Unlimited, with a matching ID letter "A" laser-printed on the keys and lock body, allowing for easy management and use across teams. Compliance and Trust: These 4 sets padlocks are designed to meet safety standards, supplied by a trusted USA-based industry expert in lock out tag out compliance solutions. QWORK