TF Fly Boxes w/ Hook ThreadersStone Creek TF Triangle Foam Fly Box w Hook Threaders Popular among fly fishers for their durability, functionality, and affordability, these fly boxes are made from high grade polyethylene with dense foam inserts featuring triangular slots that securely hold flies of various sizes and shapes. Each box includes an attached set of three hook threaders to help thread tippet through even small hook eyes. A great choice for anglers of all skill levels,