The siegen s0636 is a 6 piece double ended ratchet ring wrench set designed for professional mechanics and engineers working in confined spaces. Manufactured from durable chrome vanadium steel, this comprehensive spanner set covers the most commonly used metric sizes from 8mm through to 19mm. The standout feature of this ratchet ring spanner set is its 72 tooth ratchet mechanism, which requires just 5° of rotation to pick up the next ratchet tooth. This makes the set ideal for working in tight spaces where conventional spanners would struggle, such as engine bays, behind dashboards, or when working around pipework and machinery. The double ended design provides 12 different working sizes across the six spanners, maximising versatility whilst minimising the number of tools you need to carry. Each wrench in the set is clearly marked with its corresponding sizes 8 x 9mm, 10 x 11mm, 12 x 13mm, 14 x 15mm, 16 x 17mm, and 18 x 19mm. The set comes supplied in a convenient storage rack to keep your workshop organised and your spanners protected. Backed by a lifetime guarantee, this siegen ratchet spanner set represents a reliable addition to any professional toolkit. Features and benefits bull 72 tooth ratchet mechanism needs only 5° rotation for restricted access work bull chrome vanadium steel construction for strength and corrosion resistance bull double ended design provides 12 working sizes from just 6 spanners bull supplied with storage rack for organised workshop storage bull lifetime guarantee for long term peace of mind specifications brand siegen contents 8 x 9, 10 x 11, 12 x 13, 14 x 15, 16 x 17, 18 x 19mm maximum length 235mm minimum length 150mm nett weight 0.91kg