Blue Chip's JD Crowe-style dobro/resonator thumb pick in a size large. This has a slightly thicker blade design as compared to our banjo picks to withstand the more strenuous use on a dobro. It is constructed using a custom designed stainless steel band and a 60/1000 of an inch(1.50mm) thick BlueChip pick. These picks are laser etched, professionally machined, and hand beveled to create the best thumb pick available.