Drop-forged, Chrome Vanadium steel combination spanners. Hardened and tempered with a hard chrome finish for corrosion resistance. 15° Offset ring ends keep knuckles clear of obstructions. 35° Angled offset open end allows for improved access. Feature specially machined flutes in the walls of the ring end which enable use on up to 85% rounded fasteners. This not only provides added strength but also prevents further damage to worn or rusted fixings. Supplied in folding storage rack.