Stahlwille Long Series Combination Spanners. Metric, drop forged high-grade special steels and chrome plated. Manufactured to DIN 3113 form B/ISO 7738 form B. The spanners have been optimally hardened in continuous furnaces with no scale build-up or skin decarburisation and gently quenched in oil. They are extremely strong yet lightweight due to Stahlwille's 'double-T profile'. The unique plating method prevents the problem of chrome flaking. The ring end of the spanners are equipped with Anti-Slip Drive profile to permit high transmission of forces to the flats of the nuts and bolts without damaging them. Made in Germany.Select Option 11 mm12 mm13 mm16 mm17 mm19 mm Add to Basket Quantity