Check the listing for details. A.B. Biller 5/16" Threaded 6mm Shaft. Condition: New. Listed at 57.00 USD. Our eBay Store About Us Contact Us Add to Favorite Sellers Please contact us for a personalized shipping quote A.B. Biller 5/16" Threaded 6mm Shaft Spring stainless steel Heat treated to Rockwell 44C Unique combination of hardnes and spring tension 6mm threads to accept most tips on the market All A.B. Biller shafts are stainless spring steel manufactured from a special alloy originally developed for the U.S. Navy. Heat treated to Rockwell 44C, these shafts produce a unique combination of hardness and spring tension. Line shafts 42" and longer come with 3 grooves to accommodate 3 bands if desired. 6mm threads to accept most tips on the market. Will also fit original Seahornet spearguns which are now distributed by Tusa and most recently distributed by Spearfishing Specialties. Product Details Category Spearfishing > Shafts SKU S32 Weight 7.0000 Color Size 32 Inch UPC .