Threading pattern is 5/16 x 24.
Knobs are made from 7075 Aircraft Aluminum.
Level III Mil-Spec Hard Coat Anodizing.
Warning: This product may be alloyed with trace amounts of lead and other elements which are known to the State of California to cause reproductive harm and cancer. To prevent exposure, do not alter the product by welding, grinding, etc. For more information, go to www.P65Warnings.ca.gov.
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