RS PRO Red 4 mm² Hook Up Wire, 100m

H07V-U rigid wires are used for domestic circuits in conduits or tubing, or for wiring and cabling electrical device panels.
These wires are commonly used to obtain better contact and greater resistance to vibration.
They are round and heavy, and have class 1 flexibility.

NC 32-201; HD 21.3; IEC 227-1.