Ernie Ball Instrument Maintenance TechmatRepair, restring, set up, and polish your instrument with the all new Ernie Ball Techmat. Made from a durable non slip rubber base with cushiony padding, the techmat's slip resistant smooth fabric surface protects your instrument from dust, debris, sharp corners, and hard surfaces. The extra large format accommodates most guitars and basses and features a metric and Imperial ruler for a quick reference guide.