The Blue Tang HYDRALLOY is UK’s improved take on the classic, multi-functional dive knife. We patented our own HYDRALLOY steel for a blade that is both strong and corrosion resistant where most competitors’ blades only offer one of those features. 

The Blue Tang® HYDRALLOY® knife is built rugged, with a serrated edge and a hooked edge for cutting through all types of rope and line. It is the ultimate safety tool.

Previously, there was not a commercially available stainless steel which had a combination of being hard enough to maintain an edge, yet stiff enough for prying, and did not rust in salt water.

Our constant quest for perfection leads us to develop a special alloy that combines the best qualities of 316 and 420 steel to produce corrosion-resistant blades with great strength and sharpness. We now do custom mill runs of our proprietary steel formula, which not only has different alloy content but also a different heat treating process than other dive knives, making UK knives unique in their performance.

Dimensions (L W H in/cm): 10.00 x 2.15 x 1.00 in / 25.40 x 5.46 cm x 2.54 cm

Blade Material: Hydralloy

Blade Tip: Drop Point or Blunt Tip

Weight: 9.30 oz / 263.65 g

Blade Length: 5.00 in / 12.70 cm

• Choice of two blade styles: traditional drop point or blunt tip divers tool
• UKs own HYDRALLOY steel blade for durability and corrosion resistance
• Stainless steel signaling pommel insulated from blade to eliminate metal to metal corrosion
• Quick disassembly for cleaning. No tools required!
• Large choil for power grip on the blade
• Serrated edge for cutting rope and line
• Hooked edge line cutter cutter
• One hand insertion and removal from sheath
• 5-inch hollow ground double edge blade
• Ozone resistant quick release knife straps included