Dr. Frank’s Calf Puller is the original obstetrical instrument developed by B.N. Frank, DVM, a specialist in veterinary obstetrics. Dr. Frank’s is a precision instrument that has proven its effectiveness year after year in thousands of calving cases.The uniform tension of this unique fetal extractor does not permit slipping or backing-up of the jack. Traction on the calf and the counter-thrust against the cow induce spreading of the pelvic bones, elevation of the abdomen, and arching of the animal’s back, all assisting in the natural birthing process.The entire unit can easily be assembled in minutes. The smooth rods unscrew for easy storage and cleaning. Dr. Frank’s comes packaged with a 45" OB chain.