Steinj&auml;ger Threaded Rods with Nuts Linkage Rods 1/2-20 Plated Zinc Yellow 28.00 Inches Long Kit Includes: One Threaded Rod, threaded RH/LH. Includes LH and RH jam nuts. Thread: 1/2-20. Overall Length: 28.00 inches. Thread Length Each Side: 3.25 inches Material: Low Carbon Steel. Finish: Plated Zinc Yellow Other Common Names: Left-Right Union, Male Turnbuckle, thumbscrew, bottlescrew, Linkage Rod, Threaded Rigid Linkage Threaded Linkage Rods are threaded right hand on one end and left hand on the other end.