For sale: 10 "Keiryu Saikyo" (Strongest Mountain Stream) Budomushi-kun (Grape Worm) Flies. ~Product Details~ Quantity: Normal Version x 5 Bead Head Version x 5 Color: Orange Hook: Size 12, with barb *Hook size and barbless hooks can be changed. These are grape worm-style flies, a favorite food of trout. This is a product I always bring with me. Thank you for your consideration.