Description: The Cart Battery Pen featuring a 350mAh capacity and 510 threaded battery compatibility is a versatile portable and rechargeable tool designed for efficient home appliance repair and precision welding; with 3 gear adjustable voltages it gives you tailored power output suitable for welding tools and cartridge weed pens ensuring optimal performance across various tasks while its reliable build and lightweight design provide convenience and long-lasting reliability for professionals and hobbyists alike. Features:. Cart Battery Pen. -Color: Colorful. -Material: Stainless Steel. Note: Manual measurement please allow slight errors on size. The colors may exist slight difference due to different screens. Package Including 1Pcs Cart Battery Pen