12 pieces in a box, 600 pieces in one piece

tips: when using a small tape measure, don't pull tape to the end with brute force, so it is easy for tape and spring fastener to squeeze each other and get stuck. If you encounter this situation, do not continue to pull the tape or snap the button, which will aggravate the squeeze between tape and spring fastener, and will never break away. At this time, the real method is: one hand keeps pressing the button, the other hand continues to pull a little tape outward, so that the tape is separated from the spring fastener, and then slowly release the hand holding tape, of course, the hand holding the button must continue to press the button. Repeat the above actions to solve the problem!