{"product_id":"coltello-ronin-black-c4","title":"Ronin Black Knife","description":"\u003ch2\u003eRonin C4 – Knife for Spearfishing\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRonin C4\u003c\/strong\u003e is a knife specifically developed for freediving and spearfishing, featuring an ergonomic and functional design.\u003c\/p\u003e\n\n\u003ch3\u003eBlade Features\u003c\/h3\u003e\n\u003cp\u003eThe blade, 81 mm long, is made of \u003cstrong\u003eAISI420B stainless steel\u003c\/strong\u003e, a material known for its corrosion resistance in marine environments. The blade extends through the full length of the handle, ensuring rigidity and stability during use. It is available with a razor grind for a clean cut and a serrated section specifically designed to make cutting lines easier. In addition, the line release notch allows speargun shafts to be freed quickly during spearfishing.\u003c\/p\u003e\n\n\u003ch3\u003eHandle and Sheath\u003c\/h3\u003e\n\u003cp\u003eThe handle is co-molded with the knife body in \u003cstrong\u003ePOM acetal resin\u003c\/strong\u003e, a recyclable plastic material that offers high rigidity, mechanical strength, and low moisture absorption. Its ergonomic shape ensures a secure, practical grip during dives.\u003c\/p\u003e\n\u003cp\u003eA high-power safety whistle is integrated into the base of the handle, useful for emergency signaling in the water.\u003c\/p\u003e\n\u003cp\u003eThe sheath, also made of black POM, features two double mounting holes for belt attachment. Its design includes a partial opening that allows the sheath to be repositioned on the belt without removing the weights, ensuring easy gear management during dives.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade material:\u003c\/strong\u003e AISI420B stainless steel with anti-corrosion PVD treatment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlade length:\u003c\/strong\u003e 81 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall length:\u003c\/strong\u003e 180 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle and sheath:\u003c\/strong\u003e black POM acetal resin, co-molded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated accessories:\u003c\/strong\u003e high-power safety whistle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttachment system:\u003c\/strong\u003e sheath with double belt mounting holes, suitable for use while wearing weights\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"C4","offers":[{"title":"Default Title","offer_id":56926827217241,"sku":"0KNIVESC4RON","price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/6732\/1945\/files\/C4-Coltello-Ronin-BLACK-Aperto.png?v=1766640315","url":"https:\/\/deepbluesub.com\/en\/products\/c4-ronin-black-knife","provider":"DEEP BLUE - Freediving \u0026 Spearfishing","version":"1.0","type":"link"}