Check out the tree of knowledge section. There's A LOT of info there. Basically, without pulsation and a measured amount of vacuum, the unit has the potential to do more harm than good. If you need to milk colostrum out of a crazy beef cow mama or lose the calf, the unit may be with it. But as a day to day milker for a family milk cow it is not a good machine.
Wife to the Greatest Husband Ever, Mother of Three Awesome Daughters, Mother-in-Law to Two Amazing Sons-in-Law, The Most Precious Grandson and Granddaughter Ever, Rancher/"Zoo-Keeper" of Hereford Cattle, Angora Goats, Remuda of Horses, Two Border Collies, One Mini-Aussie, A Duke's Mixture of Chickens, Seven Ducks (Rouen), and One Sweet Mini-Jersey named Katy Kow!
This book is intended as an inspirational manual for keeping a family milk cow. A lifetime of practical experience has been bound into one volume. Practical advice for the everyday and procedures for cow emergencies. Plus, answers to FAQ's like, 'Should you get a cow?' and 'How Much Space do I need?'