For replacement tips : ASIN B09TD159HP , https://www.amazon.com/kingtool
For "Cordless 3D Printing Smoothing Tool Kit" : UPC 729920676569 , https://www.amazon.com/kingtool
*** This is an electronic product. Please don't crush, compress or drop the product. The product might be damaged during transportation, even with thorough and completed package. If you encounter any damage when you use the tool for the first time, please kindly contact us soon. Please screw the tip onto the tool carefully to avoid damaging the thread.