Rob Allen Grewia Dive Knife

Knives

This category contains Rob Allen dive knives for spearfishing and diving: the Grewia, X-Blade 105 mm, X-Blade 2 180 mm, Dentex, Dentex-R and Cobia, plus replacement knife straps for X-Blade, Dentex and Cobia sheaths.

A dive knife is a safety tool first: it cuts line and lets you dispatch fish quickly.

How to choose a Rob Allen dive knife

Blade size and shape

Compact knives are easier to carry and less likely to snag. The Dentex is a one-piece knife in Japanese AUS 8 stainless steel with a stiletto tip for quick dispatching. The X-Blade has a 105 mm blade and textured rubber handle. The X-Blade 2 has a 180 mm dagger blade, a low-profile build that reduces snagging and an extractor in the handle to help free stuck shafts.

Sheath and mounting

The Dentex comes with a Rob Allen Pancake sheath that grips the blade by friction and mounts on an arm or leg strap. The X-Blade 2 sheath fits the calf or forearm. Spare elastic straps with stainless buckles fit X-Blade, Dentex and Cobia sheaths. You can also mount a knife on your belt from Weights & Weight Belt.

Care

Rinse the knife and sheath in fresh water after every dive and dry them. The Grewia has a 420 stainless steel blade and disassembles for cleaning. More gear is in The Gadget Shop.

FAQ

Can I buy a Dentex sheath on its own?
Yes. The Dentex-R is offered as knife with sheath, blade only, or sheath only.

Which knife is best for large fish?
The X-Blade 105 mm is listed for spearfishing large fish; the X-Blade 2 offers a longer 180 mm blade.

Where is the best place to wear a knife?
Forearm or inner calf, where it cannot catch on your floatline.