The Planet Waves Adjustable-Insert Pick is a customizable solution to achieve a variety of picking sounds and attacks. Designed with the electric bass player in mind, a rubber outer pick accepts different inserts of varying thicknesses for soft to hard attacks - the perfect tool to attain a finger-plucked tone on the bass or electric guitar. The Adjustable Insert Pick is also a great tool for acoustic guitars, ukulele, and more to achieve new tonal possibilities!