Double Ring Spanner Set | S-Type | 10 x 11-18 x 19 mm | 5 pcs. made of chrome vanadium steel cold forged satin chrome plated S-type profile: 12-point.packed in a tetron wallet.double ring spanner, S-type, 10x11 - 12x13 - 14x15 - 16x17 - 18x19 mm