Pneumatic 4000b is an absolute leader in middle-distance shooting, with no obvious shortcomings. Whether attacking or defending, it is easy, soft and not heavy, but it is also very powerful to kill the ball, especially to kill the block.
Highlight: single and double all-inclusive, first-class in face value, excellent in comprehensive performance, high in sugar value, suitable for all levels, and extremely cost-effective.
Disadvantages: Without obvious shortcomings, there will be no obvious advantages and the characteristics are not clear enough.