Key Performance Indicators (KPIs)

Reliability – does it consistently do the job it’s required to do?

Durability – is it likely to last a long time?

Appearance – is it easily identifiable?

Brand – is it from a reputable manufacturer?

Shear strength – is it resilient while twisting?

Compatability – does it match the lock?

Turnability – is it easily turned or does it sort of stick and require wiggling about?

Master – all hail the master key


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