Automatic Heavy Duty Knife with 5 Hole Handle - Black Advanced Safety Tech Automatic Heavy Duty Knife with 5 Hole Handle - Black
Automatic Heavy Duty Knife with 5 Hole Handle - Black Advanced Safety Tech Automatic Heavy Duty Knife with 5 Hole Handle - Black
Automatic Heavy Duty Knife with 5 Hole Handle - Black Advanced Safety Tech Automatic Heavy Duty Knife with 5 Hole Handle - Black

Safety Technology Automatic Heavy Duty Knife ST-AK-101 – 3.5-Inch Stainless Steel Blade, 5-Hole Handle Design, Safety Lock Mechanism, 8-Inch Overall Length, 4.5-Inch Collapsed, Black Finish, Belt Carry Ready

SKU: ST-AK-101
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$18.95

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Some situations call for a reliable cutting tool that deploys without fumbling. This automatic knife opens with one hand via a spring-assisted mechanism, locks into place, and folds down to 4.5 inches for pocket or belt carry. It’s a straightforward, heavy-duty folder built from stainless steel throughout.

  • 3.5-inch stainless steel blade with automatic spring-assisted deployment
  • 5-hole handle design reduces weight while maintaining grip
  • Safety lock prevents accidental opening or closing
  • Collapses to 4.5 inches for compact carry
  • Full stainless steel construction at just 0.4 lbs

A Pocket Knife That Opens When You Need It To

There are moments when you need a blade ready quickly — cutting cordage, breaking down boxes, handling an outdoor task with one hand occupied. A manual folder works fine when you have time and two free hands. When you don’t, an automatic knife fills that gap.

This model is a no-frills automatic folder. It deploys with a button press, locks securely open, and folds back down with the safety engaged. Nothing complicated. Nothing fragile.

Who This Knife Is For

People who work with their hands — trades, outdoor work, property maintenance — and need a knife that opens reliably with one hand. Campers, hikers, and anglers who want a blade they can deploy without setting down what they’re holding.

Also worth considering if you carry a knife daily and want something more substantial than a lightweight folder, but not as bulky as a fixed blade.

Is This the Right Choice for You?

Choose this automatic knife if you want:

  • One-handed deployment with a positive lock
  • A compact folder that collapses to 4.5 inches for pocket carry
  • Full stainless steel construction that handles heavy-duty cutting tasks

Consider something else if you need:

  • A longer blade for larger cutting jobs — this one is 3.5 inches
  • A knife legal in jurisdictions that restrict automatic openers — check your local laws first

How It Works

The spring-assisted mechanism deploys the blade fully with a single button press. Once open, the blade locks into position and stays there until you deliberately release it. The safety lock adds a second layer — when engaged, it prevents both accidental opening while folded and accidental closing while in use.

The 5-hole handle design isn’t just aesthetic. It reduces overall weight without compromising grip, and the cutouts provide natural finger indexing so you know where your hand is on the handle without looking. At 0.4 lbs, it’s light enough for daily carry but substantial enough that it doesn’t feel like a toy in your hand.

Quick Comparison: How Does This Knife Stack Up?

Feature Auto Knife (5-Hole) Manual Folder Assisted-Open Knife Fixed Blade
Deployment One-button automatic ✓ Two-hand or thumb stud Partial spring assist Always ready ✓
Collapsed Size 4.5 inches ✓ 4-5 inches ✓ 4-5 inches ✓ N/A — needs sheath
Safety Lock Yes ✓ Varies Varies N/A
Weight 0.4 lbs 0.2-0.4 lbs ✓ 0.3-0.5 lbs 0.5-1.0 lbs
One-Hand Use Yes ✓ Sometimes Yes ✓ Yes ✓
Best For Quick deployment, daily carry Simple tasks, legal everywhere Middle ground Heavy outdoor use

Practical Details

Overall length open is 8 inches. Collapsed length is 4.5 inches. Blade length is 3.5 inches. Full weight is 0.4 lbs. Construction is stainless steel throughout — both blade and handle. Black finish. Automatic knives are restricted or prohibited in some states and municipalities. Verify your local regulations before purchasing.

A dependable automatic folder built for real work. If one-handed deployment and solid construction matter to you, this one earns its place in a pocket or on a belt.

Is this knife legal in my state?

Automatic knife laws vary significantly by state, county, and city. Some states allow ownership but restrict carry. Others prohibit automatic knives entirely. It’s your responsibility to confirm legality in your jurisdiction before purchasing. We cannot provide legal advice on specific locations.

What’s the difference between this and a spring-assisted knife?

A spring-assisted knife requires you to start opening the blade manually before the spring takes over. This automatic knife deploys the blade fully with just a button press — no initial manual movement needed. That’s the practical difference when you only have one free hand.

Can the blade close accidentally while I’m using it?

No. The locking mechanism holds the blade in the open position until you deliberately release it. The safety lock adds additional protection against accidental closure. When both systems are engaged properly, the blade stays where you put it.

Type of KnifeAutomatic
Overall Length8 inches
Blade Length3.5 inches
Collapsed Length4.5 inches
Handle MaterialStainless Steel
Weight0.4 lbs
Dimensions8" x 1.38"

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