Name: Red light pen metal pen head 7MM ceramic sleeve ceramic core light pen pen type red light source repair parts
Material: Ceramic
Size: 7mm/0.27in

Installation method: 1. Remove the metal head at the front end of the red pen in a counterclockwise direction 2. Remove the broken ceramic sleeve with tweezers or needle-nosed pliers 3. Gently put it into the new ceramic sleeve by hand, and remember not to install it with brute force, and spin it to make it in place 4. Put the metal head back, use long-nosed pliers to buffer the paper layer, and tighten it with appropriate effort (or at least tighten it by hand). Remember that not all installation processes use brute force. To avoid damage to the ceramic sleeve again, please be careful to clean the fiber core after insertion!