This 8-piece metric box spanner set from AB Tools is designed for efficiency and durability. It features double-ended spanners, offering two different sizes per spanner, and includes a tommy bar for added leverage. The spanners are zinc-coated to resist rust and corrosion, ensuring longevity. The set comes neatly organized in a canvas tool roll for convenient storage and transport. Each spanner has a unique size combination and total length: 6mm x 7mm (112mm), 8mm x 9mm (115mm), 10mm x 11mm (127mm), 12mm x 13mm (140mm), 14mm x 15mm (142mm), 16mm x 17mm (149mm), 18mm x 19mm (163mm), and 20mm x 22mm (177mm). The included tommy bar measures 172mm. Manufactured from chrome vanadium steel for strength and durability.