This pick was designed by JD Crowe and constructed to his very exacting specifications. The BCT-JDL is the exact pick that JD uses.  The pick bears JD's initials on the inside between the rivets.  It is constructed using a custom designed stainless steel band and a 50/1000 of an inch (1.25mm) thick BlueChip pick. These picks are laser etched, professionally machined, and hand beveled to create the best thumb pick available. 

Size compares to a standard large thumb pick of any brand.