NuFletch’s Spectrum "Standard" is designed to fit most standard carbon hunting shafts. Many shaft manufacturers list the OD (outside diameter) on their packaging or web page. The Spectrum Standard will fit carbon arrows with OD’s between (.280-.306) The list below is merely a sample of the arrows that can be used with the NuFletch “Spectrum” Standard. In most cases the “Spectrum” will fit your standard hunting shafts. Large diameter special order shafts may be outside the .306 range for this product. Small diameter shafts are addressed by the “Spectrum Light”.