Name: Kobalt Small Drain Rubber Bladder
Brand: Kobalt
SKU: 5013102037
Price: 13.52 USD
Availability: InStock
Rating: 4 (312 reviews)

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For tough clogs, both DIYers and Pro customers can use this Drain Bladder along with a Garden Hose. The Bladder expands in the drain which forces water through the clog, clearing it from your pipes. Lowe's offers three sizes of Bladders: Small (for 1in to 2in drains), Medium (for 1.5in to 3in drains), and Large (for 4in to 6in drains).

Used for unclogging stubborn blockages in bathroom sinks, shower drains, bathtubs
Solid rubber material with brass fittings
Use this device with a garden hose
For use in 1in to 2in drains
Bladder expands in the drain, forcing water through the clog
Do not use in toilet
Lifetime warranty

General
Collection/Series Name	Small Drain	Package Quantity	1
Type	Bladder	Grade	Residential
Material	Rubber	Use Location	Indoor

Dimensions
Cable Length	0	For Use with Minimum Pipe Size (Inches)	1
For Use with Maximum Pipe Size (Inches)	2

Features
Lowe's Exclusive	Yes

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	Limited lifetime

Miscellaneous
UNSPSC	47131800

Check out the Best Selling Drain Openers on Lowes.com

Review

4 out of 5

312 Reviews

75% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 1

What Customers Are Saying

Customers overwhelmingly praise this drain-clearing tool for resolving stubborn clogs that other methods failed to tackle, with many reporting dramatic results within seconds of use. Reviewers highlight its simplicity—just connect a garden hose and apply water pressure—and emphasize significant savings compared to professional plumbing services. Most find it effective for main sewer lines, pool drains, and basement pipes. However, a notable minority report durability issues, including bladders bursting during first use or splitting after minimal application. Despite these failures, the dominant sentiment reflects strong satisfaction with its powerful, DIY-friendly performance for tough blockages.

Customer review summary generated by AI, including incentivized reviews.

312 Customer Reviews

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Great Emergency Tool to Have

Would Recommend

Needed for a clogged sewer line emergency. Performed exactly as needed. Would recommend to anyone. Try this first before calling a plumber.

7105 timwSeptember 9, 2026
From Medium Drain Rubber Bladder Verified Purchaser

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Bladder

Would Recommend

The item was easy to use, and it was plenty of pressure to force out the clog in the drain

September 7, 2026
From Medium Drain Rubber Bladder Verified Purchaser

Was this Review Helpful ?

Saved me hundreds in emergency plumber fees

Would Recommend

Works like a charm, you just need decent water pressure going through the hose you use. Also, don't leave this bladder outside for 3 years baking in the sun, or it will explode on you like you're Daffy Duck. The new one will be kept in the house, as God intended.

LauraAugust 27, 2026
From Medium Drain Rubber Bladder Verified Purchaser

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25 dollar part causes a large repair

Would Not Recommend

This cheaply made rubber part came apart in the pipe. We ended up having to call a plumber because this thing caused a bigger issue than just a clogged line.

Richard LangleyAugust 9, 2026
From Large Drain Rubber Bladder

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Does the Job

Would Recommend

I had 2 drained backed up and my one wouldn’t unjam for the life of it. So I went to try the other out and within 5-10 minutes got the other one unclogged. The 1st drain I believe it broke off rust and now is clogged even more

JoshAugust 5, 2026

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6 Questions

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		Name	Current Item KobaltSmall Drain Rubber Bladder
		Ratings	312
		Type	Bladder
		For Use with Maximum Pipe Size (Inches)	2
		Material	Rubber
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