Knob Material

•  Aluminum (2)
•  Black Airleather (1)
•  Black Aluminum (1)
•  Black Leather (8)
•  Mahogany and Beechwood (2)
•  Red Aluminum (1)
•  Satin Aluminum (1)

Insert

•  Black Chrome (2)
•  Blue (1)
•  Brown Leather (2)
•  Carbon Effect (1)
•  Chrome (3)
•  Dark Chrome (1)
•  N/A (2)
•  Red (1)
•  Silver (1)