USB Rechargeable Design: Our engraving pen is USB rechargeable. Cordless use lasts up to 30 minutes idle after fully , which can meet most of the requirements of your DIY projects at anytime and anywhere. Visible Speed Adjustment: 3 levels adjustable speed(5000-10000-18000RPM), you can adjust working speed for different application. 3 levels adjustable rotation speed allows beginners to learn to carve gradually and use it safely. Engraving Tool Kit contains 1x engraving pen, 20 x bits, 3 x stainless steel cutting discs (22mm, 25mm, 32mm), and 1 x shank pin. 16 x stencils, 1 x USB power cable. Electric engraving pen enough for everything you need. Engraving tool perfect for DIY creations, crafts, light projects, personalized accessories, and gifts. Keep the portable size and USB wireless engraver so you can apply the engraving tool everywhere. Color: silver material: metal Package Contents: 1 x engraving pen 20 x drill bits 3 x stainless steel cutting discs (22mm, 25mm, 32mm) 1 x handle pin 16 x Templates 1 x USB Power Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.