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🌊 Dive sharp, grip firm, and stay visible—your ultimate underwater edge!
The SZCO Supplies 9-Inch Blue Dive Knife combines a durable 4.5-inch corrosion-resistant stainless steel blade with a rubberized non-slip handle and a bright blue high-visibility design. Equipped with a sawtooth spine and gut hook, plus a hard sheath and leg strap, it’s engineered for precision, safety, and versatility in diving, snorkeling, and outdoor adventures.

| ASIN | B003WKNELM |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #153,759 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #26 in Divers' Knives & Shears |
| Blade Edge | Flat |
| Blade Length | 4.5 inches |
| Blade Material | Stainless Steel |
| Blade Shape | Straight Back |
| Blade Type | Serrated |
| Brand | SZCO |
| Brand Name | SZCO |
| Color | Blue |
| Customer Package Type | FFP |
| Customer Reviews | 4.1 out of 5 stars 1,079 Reviews |
| Global Trade Identification Number | 00801608004243 |
| Hand Orientation | Ambidextrous |
| Handle Material | Rubber |
| Included Components | Sheath |
| Item Length | 9 inches |
| Item Shape | Linear |
| Item Type Name | Divers Knife |
| Item Weight | 0.1 kg |
| Manufacturer | SZCO Supplies, Inc. |
| Model Name | 210424-BL |
| Model Number | 210424-BL |
| Number of Items | 1 |
| Part Number | CN210424BL |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Hunting, outdoor |
| Reusability | Reusable |
| Size | 4.5" |
| Special Feature | Corrosion Resistance, Saw-tooth Spine, Miniature Gut-Hook |
| Special Features | Corrosion Resistance, Saw-tooth Spine, Miniature Gut-Hook |
| Style | Buck |
| Theme | Aquatic |
| UPC | 801608004243 |
| Unit Count | 1 Count |
| Warranty Description | 30 Days |
T**R
Great For The Money
The product is as advertised. The common review about the knife being loose in the sheath is true but can be easily remedies with some sponge like material strips installed. Has drainage holes in sheath to help prevent corrosion of blade from trapped water. It is very sharp and ready to use. Having the serrated edge on the spine of the blade is a must to make full use of the actual cutting edge.
L**N
Rusted first uses
Totally not worth the price! Rusted after one uses, will not keep an edge and lock sticks underwater. You’d get more value from a sharp piece of obsidian wrapped in a sock. It’s so awful I felt I needed to leave a review. I normally only do this when a product is not worth buying.
P**.
Decent knife for the price. Probably will not last forever.
There really isn't much room to complain with a $13 dive knife. I think you get what you pay for, and actually for $13 this thing is pretty decent. Sure, it's a China made cheaper knife, but if you're only looking to spend a few bucks then this should work out fine. If the blade does show minor rust, you can probably steel wool it off and keep some oil on it. Now, I have not used it to a great extent, but I don't expect it to last me 20 years.
M**S
Extremely sharp
Very sharp blade. Great knife
J**E
Sharp but you get what you pay for.
Rusted day 1 and the clips are super weak but it worked for braining and cutting fully through marlin. It kept coming unbuckled until I put other straps on it.
D**D
Not bad for the price, but don't depend your life on it.
Its okay for the price. gets the job done. But it rusted easily after one trip.
D**O
Great Dive Knife
I’ve been diving for years and any experienced diver will tell you they’ve lost knives before, it’s part of the sport,..especially spear fishing. This knife is inexpensive, straps are decent, and it stays in the sheath and has a nice feel in the hand. For a knife that may eventually be lost this is a nice choice. To help prevent rust even on SS, even from china,..rinse thoroughly with fresh water, thoroughly dry it, and it’s good to oil it when you stow your gear, even overnight. Simple maintenance.
A**S
Solid, sharp, and affordable
I was skeptical because of the mixed reviews but for $12 I said why not and gave it a shot. The knife is sturdy, wicked sharp and it comes with a hard case and straps big enough to go around my legs. Mind you I'm a solid man at 6'1", 260 lbs so a lot of "standard " things don't fit me. I saw complaints about the sheath and lock so I held it upside down and shook the thing as hard as I could and the knife never came loose, however the release button is so smooth I can unlock and draw it out with only my thumb. All I know if you want play practical dive knife without spending a lot of money then this blade is for you 👍
P**A
Pelo preço, considerei uma boa relação custo-benefício.
Recebi há poucos dias, amolei, e tive uma boa Impressão. Agora, somente o tempo de uso me dirá se a lâmina conservará bem o fio. Pelo preço, considerei uma boa aquisição.
J**N
Excelente produto
Excelente produto
G**R
Solid knife that holds up well.
Good knife at great price. Had one of these for 20 years. Just lost it, and bought another one.
M**F
Buen producto
Muy buena, tiene un filo muy fuerte, el problema será cuando se quiera viajar en avión con esta cosa jeje
L**Z
did the job required, good price
needed a knife for my advanced dive course, so this was a good price. Looks a bit cheap, but it did the job. I prefer to use a small fishline cutter now as it's smaller and doesn't require being strapped to my leg.
Trustpilot
5 days ago
4 days ago