Quick Summary
The Bell self-sealing inner tube is a single black tube for a 29-inch bicycle tire measuring 2.10-2.30 inches wide. It has a 40 mm Schrader valve and comes with pre-installed liquid sealant intended to seal punctures up to 1/8 inch while riding.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Size | 29 x 2.10-2.30 inches; match both wheel diameter and tire width. |
| Valve | Schrader, 40 mm, with a valve core cap. Check that your rim and pump setup work with a Schrader valve. |
| Sealant | Pre-installed liquid sealant is intended to seal punctures up to 1/8 inch while riding. It is described as lasting up to two years and as not drying or freezing; these claims do not guarantee that every puncture will seal. |
| Weight and quantity | 380 g; one tube. |
| Model | 7109049. |
What to Compare Before Buying
- Tire dimensions: Confirm the tire is 29 inches and its width falls within 2.10-2.30 inches. A similar wheel size alone does not establish a match.
- Valve type and length: Check for a Schrader valve and confirm that the 40 mm length suits the wheel and inflation setup.
- Sealant expectations: The sealant is described as addressing punctures up to 1/8 inch. Do not treat that stated limit or sealant-life claim as a guarantee for all punctures or conditions.
Safe Use and Important Precautions
Check the tire sidewall for its maximum PSI and do not overinflate. Follow the applicable instructions for fitting and inflating the tube.
Before You Decide
Match the tire’s diameter and width, verify the Schrader valve fits your setup, and consider whether the stated puncture-sealing limit meets your needs.
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