A knob designed for a round shaft has a smooth, cylindrical hole that matches the shaft's shape. This type of hole allows the knob to slide easily onto the shaft, relying on a grub screw / set screw or friction to keep it in place.
Davies Style Natural 1900h Knobs (10 Pack) *B-STOCK*
Gator Frameworks Tall Tripod Style Stand for Alto or Tenor Saxophones; (GFW-BNO-SAXTALL)
African Djembe Drum 12" Tall Traditional Musical Instrument Home Decorative
Padded Mandolin Gig Bag for A & F Style - Soft Case With Accessory Storage Pocket, Handle and Adjustable Shoulder Strap - Country Style Instrument Handbag Backpack
Ciieeo String Harp Lyre Harp for Beginners Instrument Wooden Classical Style Instrument for Adults
A Trumpet in - Gold Plated Musical Instrument, Cavalry Style Instrument, Classical Trumpet | Practice Lesson for Beginners Band Orchestra Entertainment Performance Training Suo
