Gateway Feathers Parabolic Barred Gray 4in 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 and can be used by both left and right-handed archers. 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