The Siegen S0635 is a 12-piece flexi-head combination ratchet ring spanner set manufactured from chrome vanadium steel, designed for professional mechanics, engineers and technicians working in confined spaces. The set features a 72-tooth ratchet mechanism requiring only 5° rotation to pick up the next tooth, making it particularly effective in tight working environments where conventional spanners cannot achieve a full swing arc. Each spanner in this metric set combines a flexible ratchet ring head with a traditional open-ended spanner, providing versatility for different fastener access angles. The flexi-head design allows the ratchet end to pivot, enabling work around obstructions whilst maintaining constant engagement with the fastener. This dual-functionality makes the set ideal for automotive repair, machinery maintenance and general mechanical applications where access is restricted. The comprehensive size range from 8mm through to 19mm covers the most commonly encountered metric fasteners in professional workshop environments. Chrome vanadium steel construction provides durability and corrosion resistance for regular professional use, whilst the included EVA foam storage tray keeps the spanners organised and protects them from damage. The set is backed by a lifetime guarantee, offering assurance of long-term reliability. Features and Benefits: • 72-tooth ratchet mechanism with just 5° swing arc for confined space working • Flexi-head design enables fastener access around obstructions • Chrome vanadium steel construction for strength and durability • EVA foam storage tray keeps set organised in toolboxes • Comprehensive 12-piece metric range from 8mm to 19mm • Lifetime guarantee for professional peace of mind Specifications: Brand: Siegen Contents: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm Maximum Length: 245mm Minimum Length: 140mm Nett Weight: 1.64kg