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Project Source 3 -Pack 2-in, 4-in, and 6-in Plastic Disposable Putty Knife

Name: Project Source 3 -Pack 2-in, 4-in, and 6-in Plastic Disposable Putty Knife
Brand: Project Source
SKU: 3959157
Price: 4.78 USD
Availability: InStock
Rating: 4.5 (708 reviews)

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4.5

708

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Shipping

Fri, Jul 10

228 available

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Warner’s 3 pack Plastic Putty Knives set includes one each of a 2 inch, 4 inch, and 6 inch knives. Use to spread joint compound, spackle, or adhesive to repair cracks, holes, and scratches prior to painting. The multipurpose set allows you to complete all of your jobs and dispose of the tools when done.

High value, low cost spreaders are made of tough plastic polystyrene
Made and priced to be perfect one-time project use
Features a chisel edge to aid fine spreading or to allow light scraping on soft surfaces
Perfect for tar, adhesives, roof caulking, wood putty, or difficult to clean materials

General
Series Name	2-in, 4-in, and	Handle Material	Plastic
Package Quantity	3	Blade Type	Flex
Blade Material	Plastic

Dimensions
Blade Width (Inches)	6	Length (Inches)	7.125
Blade Width(s)	6-in

Features
Disposable	Yes	Reusable	No

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	None

Miscellaneous
UNSPSC	27112600

Check out the Best Selling Putty Knives on Lowes.com

Review

4.5 out of 5

708 Reviews

90% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

Customers overwhelmingly praise these plastic putty knives for exceptional value and affordability, with most noting they deliver solid performance for light-duty tasks like spreading putty, spackle, and epoxy. The three-size pack is highly appreciated for convenience and versatility in small repairs and cleanup work. Reviewers consistently report the knives work well for occasional use and are sturdy enough for their intended scope, though several note the plastic blades lack the rigidity of metal tools and can bend under heavy pressure. A few mention minor issues like ridges or breakage, but these concerns are far outweighed by widespread satisfaction with cost-effectiveness and practicality for casual users.

Customer review summary generated by AI, including incentivized reviews.

708 Customer Reviews

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Sturdy item

Worked really well for what I needed it for and it didn't break

AnnieJuly 1, 2026
Verified Purchaser

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Cheap, quick and the basic knife. A good, low cost repair tool.

JayBeeJune 28, 2026
Verified Purchaser

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Project Source 3 -Pack 2-in, 4-in, and 6-in Plastic Disposable Putty Knife