Product Information: hine body: Titanium magnesium alloy aluminum Motor: Brushless DC motor Working voltage:4.5V-7.5V , Max voltage:8V Weight: about 116g Stroke: 3.6mm Rpm Range es: 8V 9000r/min Colors : Gray, Red , Black Feature: 1.This cartridge is CNC-hined by aircraft Aluminium alloy and then anodized finish 2.Non-slip handle design, lightweight and exquisite. 3.The motor parts can be disassembled and replaceable 4.The advanced gear system guarantees reliability and quiet operation 5.double ball design,turning the handle creates a sense of frustration,the needle is more stable Package Include: 1*Tattoo hine pen 1*Tattoo RCA cord