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*
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
6 Pieces Wooden Percussion Set Handmade-Style Wooden Xylophone-Style Instrument
ABOOFAN Wooden Beginners Flute in C Key for Students Lightweight and Comfortable to Hold Traditional Chinese Style Instrument for Music Training
Sitar Hemraj Teak Wood Professional Ravi Shankar Style Instrument GSM059
