The TEN600515R Ratchet Combination Spanner has the following specifications: Size: 15mm. Length: 200mm. This Teng Tools ratcheting combination spanner combines an open ended spanner with a 72-tooth 12-point ring ratchet. The ratchet has a 'flip reverse' feature, which switches the direction of the ratchet, and it is offset at a 13 angle for ease of access. Both ends are of the same size. The spanner is made from chrome vanadium steel for strength and durability, and has an attractive satin finish.