Experience the classic feel of Fender no matter what guitar or bass you play. Fender picks provide comfort and high-performance flexibility for every performer, with a variety of sizes, shapes and thicknesses to suit the playing styles and preferences of every guitarist. Celluloid is a premier pick material and the cornerstone of the Fender pick collection for decades. Celulloid picks give the traditional feel and a warm, round musical tone. The 551 shape has a slightly wider body and sharp tip from the 451. Perfect for any player that wants a fast-picking action, and who likes to create harmonics. The 551 shape has a slightly wider body and sharp tip from the 451. Perfect for any player that wants a fast-picking action, and who likes to create harmonics.