Benchmade H20 Dive Knife – 3.50″ N680 Black Combo Blade, Black Handle – 112SBK-BLK

The Benchmade H20 is a fixed blade dive and maritime knife built around N680 stainless — the nitrogen-alloyed Böhler-Uddeholm steel that outperforms 154CM, CPM-S30V, and 440C in saltwater and sustained submersion environments. It’s designed for divers, watermen, and maritime personnel who need a reliable cutting tool that won’t corrode in the conditions where it’s actually used.

The 3.50-inch blade carries a black coating and combo edge: the plain section handles general utility and line cutting, while the serrated section provides aggressive bite on braided rope, netting, and synthetic materials that resist a plain edge under water pressure. The sheepsfoot-style profile keeps the tip blunt and safe for underwater work — reducing the risk of accidental puncture of a dry suit, BC, or other gear while still delivering a strong cutting edge along the full belly. The handle is overmolded for wet-hand grip and integrates with the included black polymer sheath for secure retention.

Built for water.

• Blade Steel: N680 stainless, black coated — nitrogen-alloyed for superior saltwater and submersion corrosion resistance vs. 154CM, CPM-S30V, or 440C
• Blade: 3.50″ sheepsfoot profile, combo edge, black coated — blunt tip for safe underwater gear handling; serrated section for rope and netting
• Combo Edge: Plain section for line and utility cuts; serrated section for braided rope, netting, and synthetic materials under water pressure
• Handle: Overmolded construction — textured for positive grip with wet or gloved hands
• Sheath: Black polymer sheath included — secure retention system for dive and maritime carry
• Fixed blade construction — no folding mechanism, immediate deployment from the sheath
• Weight: Verify on manufacturer page
• Warranty: Benchmade LifeSharp warranty — free lifetime sharpening, blade replacement, and mechanical repair

Specifications