1/2-10 single start acme threaded rod lead screw w/ brass nut 12&quot; 24&quot; 36&quot; 48&quot;<br />right handed.<br />single start. 10 tpi<br />each rod comes with one brass nut<br /><br />lead screw material: carbon steel<br />length: 12&quot; / 24&quot; / 36&quot; / 48&quot;30.48cm / 60.96cm / 91.44cm / 121.92cm<br />diameter: 10mm<br />brass nut size: 31x15x20mm<br /><br />package include:<br />1 x rod lead screw<br />1 x brass nut<br /><br />note:<br />1.please tell  which length you want， or we will send you in random.<br />2.please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.<br />3.due to the difference between different monitors， the picture may not reflect the actual color of the item. thank you!