Blue Abalone Key Buttons Machined One-Piece Neck Receiver High F# Adjustable Metal Thumb Hook Ribbed Construction Detachable Bell and Bow Triple-Annealed Bell, Bow, and Necks Italian Water-Resistant Leather Pads w/ Wool Felt Convex Nickel-Plated Brass Resonators Blued Steel Springs Power Forged Keys Upper and Lower Stack Adjustment Screws Pivoting C#-Bb table mechanism Hard Rubber Mouthpiece Hand Acoustically Customized by a Professional