Sparrows Thumb-turn Bypass Euro-Driver Tools - 2 pieces key-working-tool thread and drive make the

thread and drive make the setup more predictable before the pull begins

TOK tension is worth learning early with light pressure

Use on suitable non-curtained lever locks

Select from the listed Lishi variants rather than guessing

Sparrows Thumb-turn Bypass Euro-Driver Tools - 2 pieces key-working-tool thread and drive make theFree UK delivery over 30 Royal Mail options 30 day easy returns European delivery available Thumbturn bypass Sparrows Thumb turn Bypass Euro Driver Tools, 2 pieces Many euro cylinders carry an internal thumbturn, often fitted for fire safety reasons, and that design can be bypassed directly. These two left and right opening tools pass through the lock and engage the cam itself, so a suitable thumbturn cylinder can be opened without picking it.