General description Hook Eye Forged Straining Screw with an open body turnbuckle design, ideal for tightening, tensioning, and adjusting various materials such as chain, rope, and cable. These galvanised straining screws provide a long-lasting protective finish, making them particularly popular in the caravaning industry. Technical specifications Product Code: SFFORHE05 Available Sizes: A (MM): 5, 6, 8, 10, 12, 16, 20, 22, 24, 30, 33 B (MM): 70, 110, 110, 126, 124, 170, 196, 220, 250, 255, 260 C (MM): 8, 9, 11, 14, 16.5, 21, 23, 27, 27, 30, 38 D (MM): 118, 159, 187, 225, 245, 310, 377, 430, 465, 540, 545 E (MM): 170, 245, 270, 315, 325, 420, 510, 580, 640, 700, 710 F (MM): 18, 22, 28, 35, 48, 59, 69, 78, 78, 93, 119 G (MM): 7, 8, 10, 14, 17.5, 22, 19, 22, 26, 31, 35