I want to know the name of the bicycle parts

Among the parts of the bicycle, there was a bolt (?) that could be turned by hand and tightened or pulled up and down (?) on the part of the tire.

What's the name of this?

472 2018-12-19 Gentleman

popular Is hair spray not allowed on the plane at all?

popular How can I connect to watch a video on my phone on TV?

popular Do oats also have side effects?

popular Why does it say that your license has expired on your phone?

popular What is the nationality of Minnie?

Same Tag How about IKEA bike?

Same Tag What do you mean by shift-up or shift-down on a bicycle?

Same Tag Are you talking about an electric bicycle?

Same Tag What is the official name of the bicycle gear gear?

Same Tag Would it be helpful to ride a bike to lose weight on your thighs?

Same Time What does six-frequency mean?

Same Time I want to know the name of the bicycle parts

Same Time Can I charge MacBook Pro with iPad Pro 3rd generation charger?