IST Spearfisher’s Knife

Best For

• Spearfishing
• Freediving
• Scuba diving
• Cutting line or rope underwater
• General-purpose underwater utility

Key Features

• 4mm Stainless Steel Blade: Substantial blade construction provides strength and durability for underwater use.
• 420J2 Stainless Steel: Offers good toughness and corrosion resistance for repeated exposure to marine environments.
• Double-Edge Design: Combines a smooth cutting edge with a serrated edge for greater versatility.
• Integrated Barb: Serrated side incorporates a barb as part of the traditional spearfishing knife design.
• Streamlined Profile: Classic shape keeps the knife relatively compact and manageable as part of a dive setup.
• Sheath & Straps: Supplied as a complete carry setup with sheath and straps.

Specifications

• Brand: IST
• Product Type: Spearfishing / Dive Knife
• Blade Material: 420J2 Stainless Steel
• Blade Thickness: 4 mm
• Blade Length: Approx. 13 cm / 5.1 in
• Overall Length: Approx. 25 cm / 9.8 in
• Blade Style: Double Edge – Smooth & Serrated
• Total Weight: Approx. 240 g / 0.53 lb with sheath and straps

What's Included

• One IST Spearfisher’s Knife
• Knife sheath
• Mounting straps

FAQs

What is the blade made from?
The blade is constructed from 4mm-thick 420J2 stainless steel.

Does the knife have a serrated edge?
Yes. The double-edged blade includes one smooth edge and one serrated edge with a barb.

How long is the blade?
The blade measures approximately 13 cm / 5.1 inches, with an overall knife length of approximately 25 cm / 9.8 inches.

Does it include a sheath and straps?
Yes. The stated total weight of approximately 240 g / 0.53 lb includes the knife, sheath, and straps.

Care & Maintenance

Rinse the knife, sheath, and straps thoroughly with fresh water after every dive, particularly after saltwater use. Allow all components to dry completely before storage. Periodically inspect the blade for corrosion or damage and the sheath and straps for wear. Follow applicable local regulations regarding the transport and use of dive knives.

Expert Insight

The IST Spearfisher’s Knife combines the utility of smooth and serrated cutting edges with a relatively thick 4mm stainless steel blade. Its compact 5.1-inch blade and included sheath-and-strap setup make it a practical addition for divers who want a traditional spearfishing-style cutting tool without unnecessary bulk.