This genuine Symmons repair part is manufactured with the same standard of engineering and manufacturing as all Symmons products. Use of a genuine Symmons repair part will help maintain your product warranty. Use with confidence for long product service life.Handle insert for use with Temptrol and Temptrol IIFor models T3-31L and T3-31S onlyHigh quality product, plasticSymmons genuine part. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov.