Patented counter bore drilled hole Acid-etched gold plating Easily slide to the hook's curve 25 per pack Eye-catching colors Spirit River Brite Beads have a patented counter bore drilled hole to allow them to be easily added to most any hook shank. Spirit River Brite Beads are different and go to the extra mile to acid etch the gold plating on each bead. It is not a cheap or fast process, but the results speak for themselves. You get a bead that has a uncompromising finish and a bead that will not tarnish. Each and every bead has a gem like finish any Jeweler would be proud of.