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?

493 2018-12-19 Gentleman

popular How can I resolve TLS security configuration errors?

popular What are the side effects of oats?

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

popular Do oats also have side effects?

popular What is the nationality of Minnie?

Same Tag Running vs. Bicycle

Same Tag Which is more effective, running or cycling?

Same Tag How long will it take to ride a bike for 10km?

Same Tag Please recommend a fine dust mask that's good to wear while riding a bike

Same Tag Please recommend a bicycle helmet

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?