SEAC Hammer Diving Knife, 12 cm Stainless Steel Blade

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Product guide

SEAC Hammer Diving Knife, 12 cm Stainless Steel Blade

SEAC Hammer is a diving knife listed for apnea and scuba diving, with a 12 cm tempered stainless steel blade and a sheath supplied with two straps. Its soft rubber grip and reversible sheath are practical details for divers who want accessible carry and storage.

At a glance

A 12 cm tempered stainless steel blade and 25 cm overall length are specified.
Soft rubber overprint on the rigid handle is intended to improve grip with bare hands or gloves.
The sheath is described as reversible and supplied with two straps.
The handle end can be struck against a cylinder to attract companions' attention underwater.
Listed for scuba diving and apnea fishing.

Price

£20.99Save 16%

Reference price: ~~£24.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Reversible sheath placement and two supplied straps give divers options for carrying the knife.
The rubber-overprinted handle is intended to improve grip both with and without gloves.
The listing describes a handle-end signalling method as well as a blade for diving tasks.

Technical specifications

12 specifications

Identity
Brand	SEAC
Model	0550017520000A
Department	Unisex
Colour	Black
Size	One Size
Sport	Diving
Season	Year-round

Blade and handling
Blade material	tempered stainless steel
Blade length	12 cm
Total length	25 cm
Sheath straps	Two practical straps provided

Package details
Package dimensions	33 x 14.9 x 3.8 cm; 370 g

What to know before buying

Listing details to confirm

The attention signal is produced by striking the handle end against a cylinder, as described in the listing. Customer feedback is mixed on quality and sharpness, so buyers who prioritise ready-to-use sharpness should take those differing reports into account.

Who is it for?

A good fit for

Scuba divers looking for a strapped sheath and a specified 12 cm blade.
Apnea fishers wanting a knife listed for that activity.
Divers who value reversible sheath insertion and a rubber-overprinted grip.

Less suited to

Buyers who need a verified sharpness level or independently confirmed blade performance.

SEAC Hammer Diving Knife, 12 cm Stainless Steel Blade · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 693 ratings

5 stars69%69%
4 stars11%11%
3 stars10%10%
2 stars3%3%
1 star7%7%

Customer feedback is divided on quality, value and sharpness. Some find the knife well made and sharp, while others describe low quality, poor value or a need for substantial sharpening. For buyers relying on the specified 12 cm blade for diving or apnea fishing, the mixed sharpness reports are worth weighing, since the listed blade dimensions do not establish how sharp a delivered knife will be.

Positive themes

Some customers describe the knife's quality favourably.
Some customers find the blade sharp.
Some customers consider it decent value.

Negative themes

Some customers describe the quality as low.
Some customers say it is not worth the money.
Some customers report that the blade needs significant sharpening.

Mixed feedback

Opinions differ on quality, value and sharpness.

Frequently asked questions

What is the blade length?

The listing specifies a 12 cm tempered stainless steel blade and a total knife length of 25 cm.

Are sheath straps included?

The listing says the sheath is supplied with two straps and can hold the knife inserted from either side.

Can the handle be used as an underwater signal?

The listing says to pull the knife from its sheath and strike the end of the handle against a cylinder to attract companions' attention.

What do customers report about sharpness and quality?

Customer feedback is mixed. Some describe the knife as sharp and good quality, while others report low quality or say it needs substantial sharpening.