7760-N/10 Dremel Lite Li-Ion Cordless, Multi- Purpose Variable Speed Rotary Tool Kit 7760-N/10 Dremel Lite Li-Ion Cordless, Multi- Purpose Variable Speed Rotary Tool Kit features a handheld cordless rotary tool with 8,000RPM – 25,000RPM of rechargeable battery powered by a USB system held in charge. 7760-N/10 Dremel Lite Li-Ion Cordless, Multi- Purpose Variable Speed Rotary Tool Kit features 4 different speed settings for better control, LED light that illuminates when battery needs to be recharged and is compatible with Dremel’s entire line of rotary accessories.