<b>Specification: </b> <br> Replacement Recliner Mechanism tension spring 3inch. <br>1-4/5inch barrel coil. <br>13/20inch Coil Diameter. <br> 180 degree offset hooks. <br> 23 coils. <br> We are committed to provide perfect products and services for you, if you feel in any way unsatisifed, please contact us via Amazon, we will try our best to help you to solve the problem. <br>