The Wapsi Killer Caddis Glass Beads are the highest quality Japanese beads available. Each bead is sized uniformly for size and shape and the killer color selection make these the beads of choice among the most serious fly tyers. *Small – Size (Approx/ 2.2mm) 150+ Beads Per Pack. *Medium – Size (Approx/ 3.0mm) 110+ Beads Per Pack. *Color Type:Transparent, Color Core or Metallic.