Elora deep crank imperial ring spanners elora 5707 professional quality long series manufactured from chrome vanadium steel hardened tempered and chrome plated for corrosion protection ring ends are accurately broached with chamfered bi hexagon profiles for easy nut location and are offset at 45176 sold loosemanufactured to din 838iso 3318 specifications elora 5707 12 x 916 deep crank imperial ring spanner