Micarta string nut for American Standard Precision Bass and other U.S.- and Mexico-made basses with 9.5"- radius fingerboards. Pre-slotted with string location grooves for easy spacing and positioning when performing final slot filing. 9.5" (241mm) top radius, 10" (254mm) bottom radius 1.655" (42.03 mm) wide. • MSKU 0048650000 • UPC 717669141936