By Seachoice Products 147;B148; Insidebolt Height: 3-7//8 9.84cm Threaddia.\Count: 3//8-16147;A148; Insidespan: 3-1//16 7.78cm 147;C148; Threadlength: 1-3//4 4.45cm Sq U-Bolt 3//8x3-1//16x3-7//8bulk St