Repair, fix, tune and polish your instrument with the all new Ernie Ball Techmat. Made from a durable non-slip rubber base with soft padding, the non-slip techmat fabric surface protects your tool from dust, debris, sharp corners and hard surfaces. The extra-large format accommodates most guitars and basses and includes an illustrated ruler suitable for more complex adjustments and tuning of instruments. This tool is ideal for guitarists and bassists of all levels.