This 41 Pieces Drill Tools Set includes 3x LED painting drill pens, 20x painting glue clay, 15x different shapes pen heads, 1xroller pen head, 1x double-sided tape Storage Bag The diamond luminous pen help you use it at night and proper size for comfortable grip Different pen heads widely applied for different kinds of diamonds, such as round diamond, square diamond, crystal diamond, glass drill and etc. Practical and easy to use: just need to glue the the sticky pen and then stick the diamond with the pen in the right position Multifunctional: Perfect for beginners or pros; and it can not only be applied to , but also for nail art, handicrafts, making adhesive tools for mobile phone decoration and etc. Specification: Pen Length: 17cm/ 6.69 inch Storage Bag Size: 20x8cm/7.87x3.15 inch Package Includes: 1 Set Drill Tools 1 Piece Storage Bag