Professional Quality, forged from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Bi- hexagon ring (not 5.5mm which is hexagon) and jaw offset at 15°. Sold loose. Chrome vanadium steel hardened, tempered and chrome plated Bi-hexagon ring (not 5.5mm which is hexagon) and jaw offset at 15° Manufactured to DIN 3113 Form B/ISO 3318 Specifications |