The ultra-fine tip allows precise application. The filament tip works evenly on threads and knots. Ideal for bead and rope weaving projects or other everyday tasks. The thread zapper uses 1 AA (1.5V) battery. Provides multiple hours of use with a single battery. Insert the battery into the pen body, aligning it correctly. Insert replacement tips into the thread pen, then press and hold the switch for 5 seconds to activate. After use, allow the tip to cool before replacing the included cap. This replacement tip is compact when not in use, saving space. If replacement tips feel loose, gently bend them for a tighter fit. The wire tip may soften when heated and become prone to deformation or breakage; always replace the cap after use to protect the tip. Color: Silver. Material: Metal. Package includes: 1 cordless wire burner pen. Other items shown are not included. Note: Screen settings and lighting may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.