The National Swing-Gate machine kit comes with everything you need except for tube, grip and needle bar. Machine kits DO NOT include instructions and should only be purchased by tattooists who are well familiar with the mechanics of a tattoo machine. The Swing-Gate machine was originally designed by Bob Shaw, one of the most respected tattooists in the profession, who is also known for his expertise in tattooing and tattoo machinery. This machine is designed for easy changing of tubes and needle bars.