Clean and lubricate the bleed valve then fit the wrench over it; the wrench's internal seal and built-in socket fits snugly over the valve. To turn further, just lift the handle of the wrench, reposition, then continue turning.
BRAKE CLUTCH BLEEDING TOOL SET WRENCH SPANNER SET COLOUR CODED 7mm - 12mm
BRAKE CLUTCH BLEEDING TOOL SET WRENCH SET COLOUR CODED 7MM - 12MM
Brake Clutch Bleeding Tool Set Wrench Spanner Set Colour Coded 7mm - 12mm
Sealey Brake & Clutch Bleeding System Universal Adaptor Power Brake/Clutch Tool