Pull head: the colors of aoshiqi metal pull head include green bronze, red bronze, white plating, yellow plating, black nickel, black-and-white nickel and matte silver respectively. Generally, the color of metal pull head shall be the same as that of the teeth of metal zipper. According to the regulations, the commonly used puller parameters are:
The mouth height of 3 metal puller is 2.1-2.2mm and the mouth width is 4.55-4.65
The mouth height of 5 metal puller is 2.7-2.8mm and the mouth width is 6.0-6.05
Limit Code: divided into top stop (front code) and bottom stop (rear code). The main function of the top and bottom stops is to prevent the puller from separating from the teeth.

