STUD BOLT THRD. FULL LENGTH WITH TWO HEAVY HEX. NUTS. ASTM A193 Gr. B8M / A194 Gr. 8M i. 5/8" X 3-1/4" (A-193 Gr. B7) Nos. 150 ii. 1" X 6-3/4" Nos. 300 Please need your best price and delivery, include 3.1 certificate Origin :No Chinese and India allowed