To adjust from the middle track Special jaws design to remove & install the tank closely.Use with 3/8"DR.

Ratchet.Adjustable Jaw Range: 122mm-199mmApplicable: For Benz, BMW,VW,AUDI, European cars, etc.

Compatible:It fits most plastic retaining rings and is Compatible with vehicles that have silent fuel tank lid.
Easy Handle:Zero damage to the plastic ring nut with this wrench and it's totally adjustable to fit whatever size ring nut possible.
Safe:With the curvature of the foot firmly fixed on the tank to ensure that no slip operation, more safe and convenient.
Universal:The universal design allows the tool to fit for any size of plastic ring nut.