Narrow gap, heavy duty · China · 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. DDY 渔趣轩 (shop) 加强窄腹曲柄钩 50枚 — ¥21.6 / 件（枚数随规格选项，列表未注明）
   Taobao list page '窄腹加强曲柄钩' sorted by sales (fetched 2026-09-25): original position 11 of 20; shop DDY渔趣轩; narrow-gap, labelled 加强 (strong wire)
2. ICHIKAWA 市川 720 MUSCLE 超窄腹曲柄钩 — ¥18 / 件（枚数随规格选项，列表未注明）
   Taobao list page '窄腹加强曲柄钩' sorted by sales (fetched 2026-09-25): original position 14 of 20; shop 乐筏路亚; super-narrow option of the 720 Muscle (heavy "Muscle" wire) listing
3. 画纪 (HUAJI) 高碳钢窄腹加强曲柄钩 — ¥6.93 / 件（枚数随规格选项，列表未注明）
   Taobao list page '窄腹加强曲柄钩' sorted by sales (fetched 2026-09-27): position 17 of 20; shop 画纪户外旗舰店. Narrow gap (slim worm belly) on a round bend with a Z-bend shank; the seller labels it 加强 (reinforced) high-carbon steel, though the same listing also sells a 细条 finesse option; unweighted, no keeper. Photo cropped from the listing image (a colour strip at the left edge removed). Gap: narrow gap; wire: heavy duty; weighted: no; keeper: offset step.