Hareline Sunken Barbell Brass Eyes. These barbell eyes have recessed ends so you can insert 3D or adhesive eyes with some Zap A Gap. They help to add realism to your fly patterns. 20 eyes per package.
Colors: Black, Nickel, Gold.
Sizes: X-Small 1/8" 3.2mm (use 3/32" or 1.5mm adhesive eyes), Small 5/32" 4mm (use 3/32" or 1.5mm adhesive eyes), Medium 3/16" 4.8mm (use 1/8" or 2mm adhesive eyes or smaller), Large 7/32" 5.5mm (use 5/32" or 2.5mm adhesive eyes or smaller).