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7/8-in 1 -Blade Utility Knife

Ratings & Reviews for Grip-Rite 7/8-in 1 -Blade Utility Knife

4.7
157
Review
 4.7 out of 5
160 Reviews


97% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this insulation knife for its exceptional cutting performance through rockwool, fiberglass, and foam with minimal effort, delivering smooth, precise, square cuts that transform a tedious task into a manageable one. Reviewers consistently highlight the durable, razor-sharp blade that maintains its edge through extended use, paired with a comfortable, lightweight, non-slip handle that reduces hand fatigue and prevents blisters. Many appreciate the high value for the low price point, calling it a must-have for insulation work. A few note the handle could be larger for bigger hands or mention limitations with thicker foam, but these minor concerns are vastly outweighed by overwhelming satisfaction.

Customer review summary generated by AI, including incentivized reviews.
160 Customer Reviews

Does the Job

Would Recommend

Worked well.

June 14, 2026
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works!

Would Recommend

inexpensive and very sharp

June 12, 2026
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Insulation

Worked as advertised

June 7, 2026
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It’s fine

Great product for the price. Does what we need it to.

May 12, 2026
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Good knife at affordable price

Would Recommend

Makes cutting rigid insulation cleaner and accurate

May 7, 2026
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Online order.

Would Recommend

Product was ready for pickup quickly

May 6, 2026
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Makes it easy

Would Recommend

Cut through the insulation easily, glad I had this tool.

May 2, 2026
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Its a knife.

Would Recommend

It cut craft backed fiberglass smoothly once started. Glad I had it while i was on the ladder. Haven’t tried rockwool yet.

April 21, 2026
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Good quality for the price

Would Recommend

Easy to use

April 17, 2026
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Worth it to make the job faster

Would Recommend

Light and easy to handle

April 16, 2026
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Cuts good

Would Recommend

Works as it should

April 8, 2026
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Worth it

Would Recommend

Smooth, easy use. Well worth the price

April 3, 2026
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GREAT!

Would Recommend

If you intend to use rockwool insulation, you will be regretting not getting this. Slices through rockwool like butter. Blade is long enough to get the job done. Can make precise cuts around outlets.

March 27, 2026
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Does it’s job

Cuts mineral wool well

February 13, 2026
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Insulation

Would Recommend

Works on fiberglass and Rockwool but not blue jean insulation.

February 12, 2026
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Ok tool

Would Recommend

Ok product

February 10, 2026
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Does the job.

Would Recommend

This is great for cutting the Rockwool Safe & Sound batts and the Rockwool comfort batts.

January 24, 2026
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