The Mast P10 Ultra have a harder hitting, perfectly designed for traditional, new school and neotraditional tattoo.3.5mm stroke Length, This machine is versatile and compatible with all brand cartridge needles. The machine have a light weight: 104g, stroke length 3.5mm, speed: 10V/10000Rpm the suggest voltage 5V-10V. Kit includes: 1*Mast P10 Ultra pen 1*LCD power supply 1*RCA clip cord 1*foot pedal 20*Mast Pro cartridges 7*tattoo ink mix color 40*ink cup 1*bandage 1*practice skin 1*transfer paper