Synovex H Heifer Implants contain two pure steroid hormones, testosterone propionate and estradiol benzoate. Each dosage consits of 8 pellets containing 200 mg testosterone propionate and 20 mg estradiol benzoate per implantation. This formulation provides a complementary amount of each hormone for maximal growth stimulation. Each dosage of Synovex h consits of 8 pellets. Synovex h is recommended for use in heifers weighing 400 lbs or more. Net contents: 10 cartridges (100 doses) Each cartridge contains 10 rows of 8 pellets.