Strange spanner.

[sardine]

What is this hinged jaw spanner for ?

 

[Erie Fred]

Maybe an early attempt at ratcheting ?

 

[Olderisbetter]

Could it hold the nut while you start the thread?

 

[zzr1200]

SP stamped into the side of the head gives the game away...

68100000 - Ratcheting Line Wrench Set 8-15mm (4pc)

Durable 4pc ratcheting line wrench set with pressure-lock grip. Perfect for brake, fuel, and hydraulic lines in tight spaces. Built for pro performance.

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