Sparrows Tension Wheel - Circular Tension Tool hand aid These shanks are for trained

These shanks are for trained users who understand that distinction and need the correct tool family for assessment

Built around a named dimple profile route

Best suited to locksmiths handling authorised shopfront or glass-door work

How to choose and practise

Write that bitting down and you can repeat the open or have a working key cut

Sparrows Tension Wheel - Circular Tension Tool hand aid These shanks are for trainedFree UK delivery over 30 Royal Mail options 30 day easy returns European delivery available Measured tension Sparrows Tension Wheel, circular tension you can measure The Sparrows Tension Wheel is a circular tension tool with graduated markings, so you can actually measure the tension you apply. For single pin picking, that lets you find and repeat the right tension for a lock: rake it first to gauge the pressure, then dial in the same measured tension