Specifications:Features:- Notched Radius Gauge design can use with strings on.- 7.25”, 9.5”, 10”, 12”, 14”, 15”, 16”, and 20”radii.- Include 2 narrow radius gauges and 2 wide radius gauges.- The set includes closely-spaced string notches for use near the nut, and wider spacing for use near the body.- Set of 4 pcs stainless steel measuring tool for Guitar fingerboard.Type: Radian RulerModel Number: M01581Material: Stainless SteelColor: SilverPackaging: PE BagQuantity: 4pcs(1 Set)Package Weight : 80 G / 2.82 OuncesPackage Dimensions (L*W*H) : 87*87*4 MM / 3.43*3.43*0.16 InchesRetail Packaging: No, No PackingPackage Include:4 x Radian Ruler