Drop-forged Chrome Vanadium steel with contoured shafts. Fully hardened, tempered & chrome plated with a polished mirror finish for resistance to corrosion. Flare type spanner jaw suitable for most common sizes of compression joint fittings. Five spanners covering ten sizes. Contents: 9 x 11, 10 x 12, 13 x 14, 15 x 17, 19 x 21mm. Model No. AK2651