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Olfa SK-7 safety knife black yellow automatic retracting blade

Olfa

Olfa SK-7 safety knife 16 mm blade automatic retracting

SKU CH-BBTK-JS5ED

Automatic retracting blade safety knife with 16 mm cutting depth and quick-change steel blade

  • Automatic blade retraction protects fingers during every cut
  • Quick-change system swaps blades without extra tools
  • 16 mm blade projection handles common materials
  • Steel blade holds a sharp edge through repeated use
  • Multipurpose design suits electrical, packaging and general tasks

Safety knife with automatic retracting blade

The Olfa SK-7 is a multipurpose cutting tool designed for electricians and tradespeople who need a reliable blade that retracts instantly when the slider is released. Its quick-change mechanism allows fast blade swaps without extra tools, keeping downtime short on the job site.

Practical limits of the automatic retraction

The blade extends 7/16 in beyond the housing, which restricts cut depth to thin materials such as insulation, cable sheathing or packaging. The unfinished steel edge dulls faster on abrasive surfaces, so frequent changes are expected during heavy daily use.

Replaces fixed-blade knives and manual retractors

Workers who currently use knives that stay open or require a separate button to retract will gain one-handed safety the moment the cut is finished. The jump is worth it when repetitive slicing creates a high risk of accidental contact with the exposed edge.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 98% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameOLFA

Questions about this item

How does the 16 mm blade width affect what I can cut?

The 16 mm blade projection length is suited for multipurpose cutting tasks and the automatic retraction engages as soon as pressure is released.

What happens when I let go of the slider during a cut?

The automatic retracting mechanism pulls the steel blade back into the housing instantly when you release the slider.

How does the quick-change system work with the unfinished steel blade?

The quick-change method lets you swap the unfinished steel blade without tools by operating the release mechanism on the handle.

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