100pcs Invisible Pen UV Highlighter Violet Light Scribing Mark UV Pen Shoes Leather Clothing Special Refill

Note: 1 This product is used for markers in the shoemaking, clothing, leather and other industries. 2 The writing of this product is colorless. If you need handwriting, you only need to use the purple light to see the traces of the lines. 3 This product is not suitable for any material, remember to test the effect first.