Heavy gauge guitar picks include different thickness from 1.2mm to 2.0mm. Different thicknesses allow for achieving the desired tone. They come in an assortment of colorful types. It is made of celluloid plastic that can be imprinted your custom logo. Different materials and shapes are also available from us. Material can be ABS, celluloid, delrin/POM, nylon, stainless steel. And shape can be heart, triangle, sharp heart shape, teardrop. Features a variety of materials, shapes and gauges to fit your sound and playing style. It is suitable for guitars of Ukulele, Bass, Electric, Acoustic and Mandolin. All of them offer multi-purpose to any personal collection, a thoughtful gift idea for guitar enthusiasts, and useful for making arts-and-crafts items like jewelry or charms.