Sidomma SD-FN3 Fillet Knife Review
Our verdict
The Sidomma SD-FN3 fillet knife set costs $18.99 and bundles 5, 6, and 7-inch blades with a sheath in one 3-piece kit. It carries a 4.6-star average across 151 reviews, tying the Kershaw 1259X's rating, making it a strong budget pick for anglers who want three blade lengths without paying Kershaw prices.
Check price on AmazonBest for
Anglers who want three blade lengths, 5, 6, and 7 inches, plus a sheath, bundled at $18.99, and who value a 4.6-star rating that matches the pricier Kershaw 1259X at less than the cost of one Rapala BP136SH.
Skip if
Skip it if you need a 9-inch blade for larger fish, since the longest blade here tops out at 7 inches, or if plastic handles feel less durable to you than the Kershaw's co-polymer construction.
- Material Plastic
- Length 12.8 Inches
- Size 5-6-7 inches blades
- Color Black-Blue
- Pieces 3.0 Count
- Feature Sheath
- Priced 41% below the category median ($32.23 across 74 tracked models)
Our scorecard
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Owner rating4.6/5
4.6 average across 151 owner ratings
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Popularity1.1/5
151 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other fishing gear and tackle we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
A day on the water rarely means cleaning just one size of fish, which is the case the Sidomma SD-FN3 makes for itself as a 3-piece set covering 5, 6, and 7-inch blades with a sheath included, all for $18.99.
That price undercuts the Rapala BP136SH's $17.50 for a single knife once three blade sizes are factored in, and comes in well under the Kershaw 1259X's $20.51 for just its one 9-inch blade. Its 4.6-star average across 151 reviews actually ties the Kershaw's rating, though on a much smaller review sample, and it clears the Rapala 126SP's 4.5 stars and the Rapala BP136SH's 4.4 stars. The plastic handle and black-blue color keep costs down compared to the Kershaw's co-polymer grip, and the 12.8-inch overall length reflects the largest piece in the set with its sheath.
At 50-plus bought last month, demand sits below the Rapala 126SP's 100-plus and the newer FOKNF-8's 300-plus, but it matches the Kershaw 1259X's own 50-plus pace exactly. For anglers who want blade-length variety and a sheath in one affordable set, the Sidomma SD-FN3 earns its spot, especially given a rating that holds up against pricier single knives.
Pros
- 4.6-star average across 151 reviews, tying the Kershaw 1259X's rating at less than the price
- Bundles 5, 6, and 7-inch blades in one 3-piece set for $18.99
- Includes a sheath, a feature not listed on the bare-blade Rapala 126SP
- 50-plus bought last month matches the Kershaw 1259X's own sales pace
- Priced below the single-blade Rapala BP136SH at $17.50 once three blade sizes are counted
Cons
- Longest blade tops out at 7 inches, shorter than the Kershaw's or DURATECH's 8 to 9-inch options
- 151 reviews is a smaller sample than the Kershaw's 1,500 or the Rapala 126SP's 423
- Plastic handle material versus the co-polymer grip on the pricier Kershaw 1259X
- 50-plus bought last month trails the Rapala 126SP's 100-plus and the FOKNF-8's 300-plus
Specifications
| Material | Plastic |
|---|---|
| Length | 12.8 Inches |
| Size | 5-6-7 inches blades |
| Color | Black-Blue |
| Pieces | 3.0 Count |
| Feature | Sheath |
Performance notes
Covering 5, 6, and 7-inch blades in one set means panfish, trout, and mid-size catches each get a properly sized blade without swapping to a longer knife that is awkward on smaller fish. The plastic handle keeps the set's cost down relative to the co-polymer or TPE grips used on pricier single knives in this comparison, though it is a lighter-duty material than those alternatives. A sheath is included, which matters with three loose blades in a tackle bag, since an uncovered edge is a real risk with multiple knives rattling around together. The 12.8-inch overall length likely reflects the longest piece in the set with its sheath attached, rather than blade length alone. None of the three blades reaches the 8 or 9-inch range covered by the DURATECH or Kershaw, so this set is built for smaller to mid-size fish rather than larger catches.
What buyers say
A 4.6-star average across 151 reviews matches the Kershaw 1259X's rating exactly, which is notable given the Kershaw has ten times the review volume at 1,500. That suggests buyers are rating the Sidomma set just as highly as a pricier, more established single knife. Its 50-plus bought last month is modest next to the Rapala 126SP's 100-plus or the FOKNF-8's 300-plus, but it matches the Kershaw's own pace, putting it on the same current-demand footing as a knife that costs more. The pattern reads as a smaller but consistently well-rated set rather than a high-volume seller, with quality perception holding up even without heavy sales numbers behind it.
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Frequently asked questions
What blade sizes are included in the Sidomma SD-FN3 set?
The set includes 5-inch, 6-inch, and 7-inch blades along with a sheath, packaged as a 3-piece kit for $18.99, suited to smaller and mid-size catches rather than large fish that need a longer 8 or 9-inch blade, and it carries a 4.6-star rating across 151 reviews.
How does its rating compare to pricier knives?
It holds a 4.6-star average across 151 reviews, matching the Kershaw 1259X's 4.6-star rating even though the Kershaw costs more at $20.51 and has a much larger 1,500-review base behind its score, showing this set holds up well against pricier competition.
Does it come with a sheath?
Yes, a sheath is listed as a feature of the set, which matters for safely storing three separate blades together in a tackle bag without loose edges creating a cut risk between trips, especially with three blades sharing one bag.