This JBL 5/16" Stainless Spring Steel Shaft is manufactured from a special alloy originally developed for the U.S. Navy. Heat treated to Rockwell 44C, this shaft will produce a unique combination of hardness and spring tension.
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- This 5/16" Shaft Fits the Following Spearguns....
JBL Sawed-Off Magnum (4D44)
JBL Sawed-Off Magnum XHD (4D44XHD) - Image is for Illustrative Reference Only
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