The screw thread is 10mm counterclockwise This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. If you need to buy a pair, please buy "Left" + "Right" This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. If you need to buy a pair, please buy "Left" + "Right" This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. If you need to buy a pair, please buy "Left" + "Right" This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. If you need to buy a pair, please buy "Left" + "Right" This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right. If you need to buy a pair, please buy "Left" + "Right" This link has two options for purchase. One is the "left side" on the left, and the other is the "right side with Pump" on the right. When purchasing, you must check clearly whether you are buying the left side or the right side. The cheap one is on the left, the expensive one is on the right.