Gateway Feathers Parabolic 4in Kuro Red Feathers - 50 Pack - These feathers from Gateway Feathers feature a parabolic shape for accurate delivery with consistent results. Measuring 15.5mm tall at its highest point and weighing 2.76 grains each, this feather can be used on all types of arrow shaft materials. This feather is best applied with Fast Fletch Glue 15.5mm tall at highest point 2.76 grains Works on all types of shaft materials For hunting and target arrows Can be used by left and right-handed archers Fletching Length: 4in Helical: Left Wing