{"product_id":"asta-sigal-sub-evolution-tacche","title":"Evolution Notched Shaft","description":"\u003ch2\u003eEvolution Shaft with Sigal Sub Notches in Heat-Treated Sandvik Steel\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eEvolution shaft with notches\u003c\/strong\u003e is manufactured by Sigal Sub using premium-quality Sandvik steel, subjected to a specific heat treatment to improve its mechanical properties. This process gives the shaft the strength and stiffness needed to ensure \u003cstrong\u003ehigh accuracy\u003c\/strong\u003e, ideal for use with open- and closed-muzzle band spearguns.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Features and Materials\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThe two loading notches use an innovative technique that creates a \u003cstrong\u003erounded-profile seat\u003c\/strong\u003e with no sharp edges or cutting corners, improving durability and safety when used with Dyneema wishbones and preventing premature breakage.\u003c\/li\u003e\n  \u003cli\u003eThe \u003cstrong\u003etail end\u003c\/strong\u003e is hand-finished to eliminate sharp points and edges, ensuring safety and comfort when handling.\u003c\/li\u003e\n  \u003cli\u003eThe \u003cstrong\u003erecessed floppers\u003c\/strong\u003e are made from raw AISI 316L stainless steel, ensuring high mechanical strength. The single flopper, manually modified to prevent it from closing after passing through the fish, is positioned on the top as standard but can also be requested in a bottom configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Variants\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo diameters: \u003cstrong\u003e6.25 mm\u003c\/strong\u003e, \u003cstrong\u003e6.5 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eSingle-flopper configuration positioned on top\u003c\/li\u003e\n  \u003cli\u003eAvailable lengths from 90 cm to 160 cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThanks to its construction and the materials used, the Evolution shaft stands out for its high \u003cstrong\u003estiffness and elastic rebound\u003c\/strong\u003e, ensuring a stable trajectory with no shaft whip during penetration in the water. It is a precise technical choice for spearfishing and freediving with band spearguns, optimized for long-term efficiency and durability.\u003c\/p\u003e","brand":"Sigal Sub","offers":[{"title":"6.25 mm \/ 90 cm","offer_id":56925773103449,"sku":"62-T625M\/090","price":23.1,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 100 cm","offer_id":56925772710233,"sku":"62-T625M\/100","price":24.95,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 105 cm","offer_id":56925772743001,"sku":"62-T625M\/105","price":23.9,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 110 cm","offer_id":56925772775769,"sku":"62-T625M\/110","price":24.3,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 115 cm","offer_id":56925772808537,"sku":"62-T625M\/115","price":24.5,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 120 cm","offer_id":56925772841305,"sku":"62-T625M\/120","price":25.2,"currency_code":"EUR","in_stock":true},{"title":"6.25 mm \/ 125 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