Spanner has two open ends with sizes of 18mm and 19mm. This allows for compatibility with nuts and bolts of corresponding sizes, providing a precise fit for fastening and loosening tasks., Taparia is renowned for producing high-quality tools, and the 18 x 19 Double Open End Spanner is no exception., Taparia 18 x 19 Double Open End Spanner is a versatile tool suitable for various applications; can be used in automotive repairs, industrial maintenance, plumbing, and many other tasks.