Home/Products/OLFA 25mm Extra Heavy-Duty Utility Knife (H-1) - Anti-Slip Rubber Inset
OLFA 25mm Extra Heavy-Duty Utility Knife (H-1) - Anti-Slip Rubber Inset

OLFA

OLFA 25mm Extra Heavy-Duty Utility Knife (H-1) - Anti-Slip Rubber Inset

Disclosure: We may earn a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Learn more

9.6/10
Check Price on Amazon

Highlights

  • RAZOR SHARP 25mm BLADE - Preloaded with HB Extra Heavy-Duty Snap-Off Blade from Japanese tool steel for unmatched sharpness and edge retention. The 25mm blade has 7 razor-sharp snap-off segments, great for industrial or construction applications.
  • STURDY PLASTIC HANDLE - Made from high-impact ABS plastic, our symmetrical handle design features an anti-slip rubber inset for additional grip. The stainless-steel channel keeps the blade firmly in place for safe operation.
  • CUSTOM RATCHET LOCK CONTROL - Designed with safety in mind, our box cutter's ratchet-based locking system provides custom cutting depths. The blade slider has a wheel locking mechanism for unlimited positions when securing the blade in place.
  • MULTIPURPOSE EXTRA HEAVY-DUTY DESIGN - The OLFA 25mm H-1 Retractable Utility Knife is perfect for cutting through the toughest materials. It delivers accurate cuts through nylon, rope, laminates, leather, rubber, gasket materials, and more.
  • THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA 25mm Utility Knife with OLFA 25mm Blades will provide optimal results.

Why You'll Love It

  • Japanese tool steel blade features seven snap-off segments for a fresh cutting edge
  • Ratchet wheel lock offers unlimited locking positions to set custom cutting depths
  • High-impact ABS handle includes a rubber inset to maintain a secure grip
  • Stainless-steel channel supports the blade securely during heavy industrial and construction tasks
  • Symmetrical handle design provides balanced control when slicing tough materials

Pros

  • +Seven sharp snap-off blade segments
  • +Unlimited blade depth adjustments
  • +Sturdy stainless-steel blade support channel
  • +Anti-slip rubber grip inset

Cons

  • -Requires manual wheel turning to lock blade
  • -Larger 25mm profile than standard utility knives

Detailed Review

The OLFA H-1 Extra Heavy-Duty Utility Knife is a rugged cutting tool built for demanding industrial and construction jobs. It is designed for users who regularly cut tough items such as nylon, rope, laminates, leather, rubber, and gasket materials.

At the core of the tool is a preloaded 25mm HB snap-off blade crafted from Japanese tool steel. The blade provides seven individual segments, allowing you to snap away a dull section to instantly reveal a fresh edge. A durable stainless-steel channel encases the blade to keep it firmly aligned and steady during heavy cuts.

Control is managed via a manual ratchet wheel locking mechanism. This slider system lets you choose unlimited custom extension depths, securing the blade tightly in place at the exact length required. The body itself is molded from high-impact ABS plastic and features a symmetrical shape with a textured rubber inset for reliable, non-slip handling.

Because this model uses a wider 25mm blade and a high-impact frame, it carries a bulkier profile than standard 9mm or 18mm box cutters. Additionally, locking and unlocking the blade requires manually turning the ratchet wheel rather than relying on an automatic slider stop.

Verdict: The OLFA H-1 is a dependable choice for tradespeople and DIYers handling dense materials. If you need adjustable cutting depth and the convenience of heavy-duty snap-off segments, this knife delivers solid utility.

Specifications

  • Blade Size: 25mm
  • Blade Type: HB Extra Heavy-Duty Snap-Off (7 segments)
  • Blade Material: Japanese tool steel
  • Handle Material: High-impact ABS plastic with rubber inset
  • Blade Channel: Stainless steel
  • Locking Mechanism: Ratchet wheel lock

Who Should Buy It

A great fit if you:

  • Regularly cut tough materials like leather, gasket sheets, laminates, or thick rope
  • Need precise control over blade extension with a secure ratchet lock
  • Want the convenience of multi-segment snap-off blades for quick edge renewal

Consider something else if you:

  • Prefer a compact, slim pocket knife for light-duty paper or tape opening
  • Want an auto-locking slide mechanism rather than a manual wheel lock

FAQ

What type of blade comes preloaded with the knife?
It comes preloaded with a 25mm HB extra heavy-duty snap-off blade made from Japanese tool steel.

How many snap-off segments are on the blade?
The 25mm blade includes seven snap-off segments.

How does the blade locking mechanism work?
It uses a ratchet-based wheel lock on the blade slider, which provides unlimited positions to lock the blade at custom cutting depths.

What materials can this knife cut?
It is designed to cut through tough materials including nylon, rope, laminates, leather, rubber, and gasket materials.

Product Details

BrandOLFA
ASINB001DKOQGU

Similar Products