The standard specification of the plastic pepperball ball  is 5.95±0.01mm. The detection method is measured with a thousand centroids. Generally, the three sides of the  plastic pepperball ball are measured. The maximum value is the upper tolerance, and the minimum value is the lower tolerance, if the upper difference is greater than 5.96mm, the lower tolerance is less than 5.54mm, it shows that the precision of the  plastic pepperball is not enough, is a secondary product, the appearance of the plastic pepperball is mainly used visual inspection method, you can use the magnifying glass to identify, mainly to see the surface brightness is not enough, Whether there is a batch wind and parting line on the top, the inner bubble detection method of the plastic pepperballl can only be accomplished with the use of a cutting pliers. Cut the entire plastic pepperballl from the middle with a pliers to see if there is any air bubbles inside. This detection method can only be random sampling, because once the plastic pepperball is cut, the plastic pepperball can no longer be used, generally sampling tens of PCS, if there is no bubble in the middle of a plastic airsfot bb ball, The  plastic pepperball is qualified and belongs to the high-quality bubble-free  plastic airsfot bb ball