I just bought a pair of Roval CL50's. After installation, I noticed that there was no tightness. I used tape to wrap the tube valve and screwed on the valve extension. That made it tight. Works perfectly!
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GUARANTEE: If you are not satisfied with the product you received, you can apply for an unconditional return and refund within 180 days. If you have any problems with this product, you can email us at any time. We will answer you as soon as possible.