Spanners are essential tools used for countless jobs. They are indispensable in the automotive industry for tightening and loosening nuts and bolts. Spanner wrenches are typically double-ended. They can have two different spanner sizes on each end, but it's also common for one end to be a spanner and the other a ring spanner in the same size.
In our comprehensive range of open end spanners, you'll find every size imaginable, including less common sizes. Spanner sizes are given in standard spanner sizes, such as 14mm or 15mm. Each spanner size corresponds to the size of a bolt. For example, a 22mm spanner fits an M14 bolt with a diameter of 14mm.