Standart Size - BAR SPIN-LOCK COLLAR CLAMPS WRENCH

Do you lift some weights at home or the gym, and got those hard metal Star Locking Collar Clamps on the Barbell road? 

Many times after they are tighten and locked it's almost impossible to open them back in order to remove the weights to add more Plates/weights or simply finish the workout.

This was the main reason i reversed engineered a prototype that will manage to open easily, wrench like, those "Star Collar" with one swing with no effort or damaging your hand or using any other tools.

There might be many other alternatives for locking those weights, but if you already got those locking Collar Start shape one, why not 3d printing a wrench for them – and save your nerves and  hands.