US Cargo Control eye and eye turnbuckles are hot dip galvanized for durability and weather resistance. Our heavy duty turnbuckles are made for in-line or straight pull applications only. These galvanized turnbuckles feature elongated eyes to maximize ease of attachment and minimize stress on the eyes. Turnbuckles are measured by the diameter of the bolt and the length of the opening of the turnbuckle body. The overall length of these turnbuckles will be longer than the stated length, as that only pertains to the opening of the turnbuckle body. These turnbuckles are designed to ASTM F1145 specifications.