The 10mm reversible ratcheting combination spanner is a hand tool designed to turn 10mm hexagonal nuts and bolts quickly without removing the spanner from the fastener. It combines a conventional open jaw at one end with a ratcheting ring at the other, making it ideal for repetitive tightening or loosening in confined spaces where full rotation is not possible.

Manufactured from chrome vanadium (Cr-V) steel that has been heat treated and tempered, this Draper Tools D-series spanner features a polished chrome finish to improve corrosion resistance and ease of cleaning. The ring end incorporates a 12‑point ratchet mechanism with a 72‑tooth index, providing approximately a 5° swing arc for fine incremental movement. The spanner conforms to the dimensional profiles expected of metric combination spanners under recognised DIN/ISO/BS standards for size and fit, and is intended for use on ISO metric thread fasteners.

Typical applications include automotive repair and maintenance, mechanical and plant engineering, equipment assembly, HVAC and plumbing work, and general workshop use. The reversible ratchet allows faster cycle times when working on engine bays, machine maintenance or assembly lines, while the open jaw affords easy initial placement on a nut or bolt where the ring cannot be engaged.

Key benefits are practical and measurable: the chrome finish reduces surface corrosion compared with untreated steel, the heat-treated Cr‑V construction gives the spanner the toughness required to resist deformation under normal hand torque, and the 12‑point ratchet head maintains contact with compact fastener profiles for efficient torque transfer. Compatibility with standard ISO metric fasteners means this 10mm spanner will work with the vast majority of metric nuts and bolts used across industry.

Duchy Fasteners stocks the 10mm reversible ratcheting combination spanner individually and as part of metric spanner sets; please contact us for available pack quantities and to confirm alternative sizes in the Draper D-series range.