Check the listing for details. Riffe 5/16" (8mm) Diameter 6mm Threaded Shaft. Condition: New. Listed at 58.00 USD. Our eBay Store About Us Contact Us Add to Favorite Sellers Please contact us for a personalized shipping quote Riffe 5/16" (8mm) Diameter 6mm Threaded Shaft 5/16 Diameter 6mm Thread Spring stainless steel Heat treated to increase hardness and help prevent bending Riffe-designed shark fin tabs can hold 1 to 2 power bands per tab RIFFE Square Notch Spearshafts are made with spring stainless steel, heat treated to increase hardness and help prevent bending. Manufactured using computer numerical controlled (CNC) machines, producing precision parts. The original RIFFE-designed shark fin tabs have a smooth finish capable of holding 1 to 2 power bands per tab. Smaller shafts feature two tabs. Three or more tabs are used on shafts 60″ and longer. Product Details Category Spearfishing > Shafts SKU S-3206 Weight 7.0000 Color Size 36” UPC .