Heavy use ring wrenches in mm

Ideal for powerful tightening/loosening thanks to the high-strength flank-drive head.
The offset makes it easier to grip difficult-to-access nuts.

Forged chrome-vanadium steel.
12-Flat flank-drive head.
Satin finish.
Possibility of adding an extension lockable with a stud to exert very high torque values.

References of the extensions:
109-R1 for wrenches 109-24 to 109-30
109-R2 for wrenches 109-24 to 109-41
109-R3 for wrenches 109-46 to 109-55
109-R4 for wrenches 109-60 to 109-70