Description: Low noise and low vibration. Good heat dissipation and long service life. Stable operation, safer than other products. Fast running speed makes it convenient to use. Integrated design, can be used as both shader and liner. Small in size and light in weight, easier to store. Specification: Functions: Shader & liner Machine material: Carbon steel Construction: Casting to shape Coils: 10 warps coils Working voltage: 4-12V Running speed: 38,000switch / min (shader) Spring thickness: 0.05cm / 0.02in Spring length: 4cm / 1.6in Weight: 180g / 6.35oz Package Includes: 1 Piece Tattoo Machine 3 Pieces Wrench