Finish designs easily with the UltraThread Zap® Thread Burner.This thread burner features a retractable tip & an ergonomic compact design.The tip heats instantly to trim, burn or melt thread. Because it retracts, you can safely set it down on your work surface after use.You don?t have to worry about whether the tip will touch anything! An extra tip is included. Battery-operated (Two AAA, not included).