3/8 inch diameter mini turnbuckle with 3/8 inches of take up, closed length of 3.375 inches. WLL is 1240 pounds with a 5:1 design factor. [break] Pro audio rigging design, roof attachment, supplemental structure, sales, support and PE stamped drawings in any US State provided by Polar Focus. Call us today for more information at (413) 586-4444.