TengTools Combination Spanner 600517 – 17mm Manufactured and designed in accordance with DIN3113A from high grade Chrome Vanadium Steel. Same dimensions at both ends. The 12 point ring end is set at a 15° angle. Hip grip ring ends to drive on the flat rather than the corner to help avoid damage to fastenings and to enable use on previously damaged fastenings. Polished heads. Satin finish.