Narrow gap, heavy duty · Japan · all prices

No maker publishes sales figures. These lists are built from best-seller and most-reviewed proxies (retailer rankings, review volume, awards) over the last five years — the source is shown under each entry.

1. Decoy (Katsuichi) キロフック WORM 17 — ¥273 (naturum list price per pack)
   naturum 'Worm hooks (offset)' category, sorted by 売れている順 (best-selling): #11. 'high-power' offset with the standard (non-wide) Kg gap; the wide version is Worm 25.
2. Decoy (Katsuichi) DECOY キロハイパー ワーム13 — ¥327 (naturum list price per pack)
   naturum 'Worm hooks (offset)' category, sorted by 売れている順 (best-selling): #27. maker: '2EX heavy wire', same size as the Kg hook but thicker.
3. Owner (Cultiva) B-13 マルチオフセットX — ¥325 (naturum list price per pack)
   naturum 'Worm hooks (offset)' category, sorted by 売れている順 (best-selling): #29. maker: thick-wire version of the B-99 multi offset.
4. Hayabusa TNSオフセットヘビーデューティ — ¥319 (naturum list price per pack)
   naturum offset-hook category, keyword ヘビー, sorted by 売れている順 (best-selling): #30. maker: heavy-wire version of the TNS offset for power finesse and heavy cover.
5. Decoy (Katsuichi) ロックフィッシュリミテッド ワーム13S (Rock Fish Limited Worm13S) — ¥385 (naturum list price per pack)
   naturum 'Worm hooks (offset)' category, best-selling sort #84 of 199; narrow gap, heavy wire, unweighted, keeper: none. Saltwater (tin-plated) 2EX-heavy-wire version of the Kg Hyper Worm13 shape. Gap: narrow gap; wire: heavy duty; weighted: no; keeper: offset step.
6. Fina (Hayabusa) パワーステージ (Power Stage, FF301) — ¥286 (naturum list price per pack)
   naturum 'Worm hooks (offset)' category, best-selling sort keyword 'ヘビー' within the offset category #18 of 39 (not on the 199-item category page); narrow gap, heavy wire, unweighted, keeper: none. Namiki 'strong wire' deep-hooking cover offset. Gap: narrow gap; wire: heavy duty; weighted: no; keeper: offset step.