The ultra-fine tip allows precise application, with a filament tip designed for detailed work on threads and knots. Ideal for completing bead and rope weaving projects or other everyday tasks. The thread burner uses 1xAA (1.5V) battery, providing multiple hours of use from a single battery. Align the battery with the pen body and insert it (battery not included). Insert the replacement tips into the thread pen, then press and hold the switch for 5 seconds to activate. After use, allow the tip to cool and replace the included cap. This replacement tip is compact when not in use, saving space. If the tips feel loose in the pen, slightly bending them may improve fit. The tungsten wire tip may soften and deform when heated, so always replace the cap when not in use to prevent damage. Color: Silver Material: Metal Package Contents: 1 set Cordless Wire Burner Pen Note: Only the items listed are included. Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.