PROBLEM TO BE SOLVED: To solve the problem of conventional systems that there is no usable thing in a case that a user wishes to carry a threading tool and a portable storage case with himself as a set such as in rock fishing.SOLUTION: A threading tool 1 comprises a quadrangular loop part 3 constituted of a linear spring material and a threading rod 17 provided continuously at its one top. Though threading work is performed with its rod erected, even if the user briefly releases his hand from the threading tool 1 when transferring it from one hand to the other, the quadrangular loop part 3 returns to its original form and the threading tool 1 gets caught in a guide G and stops there and it never reverses the guide G since it juts out in diamond form larger than the bore diameter of the guide. When it is stored in a storage case 23, the bending sections 7 and 9 of the quadrangular loop part 3 hit the inner face and it slacks a little, and is held in the state of being positioned. When taking out the threading tool 1, it can be taken out easily by pushing the bending pieces 4 and 4 projected from an ejection hole 43 back into the inside 25 of the body.COPYRIGHT: (C)2013,JPO&INPIT【課題】糸通し具と携帯用の収容ケースとをセットにして磯釣りのように携帯したい場合に活用できるものは無かった。【解決手段】糸通し具1は線状バネ材で構成された四角形ループ部3と、その一頂部に連設された通し棒17とからなる。糸通し作業はロッドを立てて行うが、手を持ち替える際に糸通し具1から一旦手を離しても、四角形ループ部3が原状復帰してガイドの穴径より大きい菱形状に張り出しているので、糸通し具1がガイドGに引掛かって止まり、ガイドGを逆行することはない。収容ケース23に収容した時には、四角形ループ部3の折曲げ部7、9が内面に当たって若干撓んでおり、位置決め固定された状態で保持される。糸通し具1を取出すときには、突出し穴43から突き出た折曲げ片4、4を本体内25内に押し戻すことで容易に取り出せる。【選択図】 図8