C spanners, also known as adjustable hook spanners or hook & pin wrenches, are high-quality hand tools designed for loosening retaining rings and adjusting chains. These specialist spanners incorporate steel roll pins that allow the jaws to adjust to suspension fastness. Our range of C spanners are versatile, easy to use, and includes leading brands such as Cooper Tools, Facom, Gear Wrench and RS PRO. You can also see our full range of spanners here.