The 9JJ100X12 is a Jaw & Jaw Turnbuckle. It meets the performance requirements of ASTM Specification F1145-05 and Federal Specifications FF-T-791B- Type1, Form 1, Class 7 and have a safety design factor of 5 to 1. Made from Drop-forged Carbon Steel for durability and Hot Dip Galvanized to ASTM A-153 for corrosion and weather resistance. The 9JJ100X12 is recommended for in-line or straight pull applications only.