Utilizing a convenient click system, artists can enjoy up to 7 stroke length options for a wide variety of procedures, including lining, color packing, shading, and more. This convenient system allows artists to keep the Fold pen bagged while making stroke length adjustments, ensuring uninterrupted and seamless tattooing. Gently and smoothly transfers ink to skin; suitable for all skin types. Frame made of standard aluminium alloy and CNC carved. Assembly by hand, effortless to cover and protect.Specifications: Stroke: 2.4mm, 2.7mm, 3.0mm, 3.3mm, 3.6mm, 3.9mm, 4.2mm. Weight: 201g, Length: 11.6cm Working Voltage: 5-12V Speed: 8V/6500RPM Motor:Coreless