Elora deep crank metric ring spanners elora 6218 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 6218 17mm x 19mm deep crank metric ring spanner