BAHCO socket spanners with hinged head, 1/4" square drive, 12-sided profile and fine polished finish. Features the Dynamic-Drive™ profile for less wear and tear, plus a thin wall for greater accessibility and additional side area to ensure maximum load and torque distribution. Approximate dimensions are 42 mm L, 17.4 mm D1, 12 mm D2, 11.5 mm T and an approximate unit weight of 25 grams.