Spanner Set - Double Ring A set of 6 metric double ring spanners manufactured from high grade drop forged chrome vanadium steel. Featuring a polished and rounded grip for use comfort, offset anti-slip profile and precision engineered faces for optimal grip with fasteners and to prevent damage. Contains: 6 x 7mm, 8 x 9mm, 10 x 11mm, 12 x 13mm, 14 x 15mm, 16 x 17mm, 18 x 19mm, 20 x 22mm.