Lujos Medium High quality Locks

Material: solid brass, hardened steel body/shackle (better than cheap pot metal).
✔ Cylinder quality: Look for multi-pin (e.g., 3- or 4-pin) or anti-pick features.
✔ Brand reputation: global brands or well-reviewed local brands.
✔ Fit for purpose: external door locks should be heavier duty than simple padlocks for lockers or bags.
✔ Key security: non-duplicatable keys or restricted key profiles for higher security.