American gas needles, each weighing 2 grams, 500 pieces each catty .The metal material on the left is American air needle, SuitableThe matched pump is shown on the left.
The plastic is European style air needle, Is used in conjunction with iron clip air cylinders. If necessary, you can choose another one in our shop.
This is a schematic diagram of air needle use. After installing the gas needle, pay attention to the wrench on the back to pull it down.