WJX tattoo pen machine tattoo pen machine has 32mm grip sleeve, made by Swiss Maxon Motor. This machine has custom Maxon motor that need start up power supply work, strong power, light sound, suit for precise line work, black and grey shading, solid color packing. Gives a possibility to pack faster, more quality and less trauma. Perfect tool for tattoo artists. This rotary tattoo pen advanced gear system that smooth, soft, and quiet operation, Ideal healing results. Flexible and lightweight for every style Gently and smoothly transfers ink to skin; suitable for all skin types. Needles Depth: 0-4.0mm. Stroke Length: 4.0mm. Effortless to cover and protect Efficient cartridge change and replacement.