Hexagon Key 0.
7mm - Faithfull FAIHK40M, Faithfull Professional quality key made from fully hardened chrome vanadium steel.
All keys from 4mm/ 5/32in have chamfered edges to prevent damage to blade and fittings.
All keys 3mm/1/8in and above are marked with their size.
Size.
4.
0mm.
Faithfull FAIHK40M Hexagon Key 4mm