Machined Stainless Steel. These adjusters have 2-1/2" of RH thread and 2-1/2" of LH thread. Medium one has a 1-1/2" center hex and is 6-1/2" overallPit Stop USA offers Wehrs Machine 3/4" Double Adjuster - 1-1/2" Medium WM40AM at low everyday prices. Be sure to check out all of our products from Wehrs Machine including Wehrs Machine Double Adjusters and Wehrs Machine Schoenfeld Header Gaskets.
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