The flat end surface can be left as is, or you can apply 3D holographic eyes with half a drop of Zap Gel. The crossbar is offset from the axis of the eyes, so that the eyes can be centered at the level of the hook shank. 12 pieces per package. The eye diameters are 3/32" for xsmall, 1/8" for small, 3/16" for medium and 1/4" for large.
Recommended diameter for adhesive eyes to use with flat end hour glass eyes: Xsmall - 1/8"; Small - 1/8"; Medium - 3/16"; Large - 3/16". Weight of each eye: Large, 0.097 oz.; Medium, 0.065 oz.; Small, 0.042 oz.; Xsmall, 0.025 oz.