Warwick Parts - Just-A-Nut, 4-String, 38.5 mm width - Brass | W-Music Distribution
Electric Guitar Nut Brass 6 String Slotted for Les Paul Epi Guitar Parts 42mm : Amazon.de: Musical Instruments & DJ
Guyker 43 mm Adjustable Guitar Nut - Bell Brass Nut (43 x 3.5 mm) Split Regulation Replacement Parts Compatible with Stratocaster Strat ST Style Guitar : Amazon.de: Musical Instruments & DJ
Brass Guitar Nuts - Are They Any Good? - Home Studio Magic