F4-50The F4 50 is a Speed Beveled Standard (351 style) pick cut from our Black Amber material, a polyetherimide long used in the pick industry for solid attack, bright tone, low friction, and pro level durability. At 50 thousandths of an inch (1. 27 mm), this pick delivers an extra firm drive through the strings. Its Token Made speed bevels are machine cut to micron level accuracy for unparalleled consistency edge to edge and pick to pick.