
Like many people, I thought that the Tuff had too many things going on. It just looked like it was trying to hard. But get this knife in the hand and it all makes sense. Every thing on this knife is there to do a job.
The groove in the blade that so many have asked why about. Well the side benefit is that it safes a little weight without sacrificing strength. The main benefit; is that knife was designed for harsh environments, if you are wearing heavy gloves this groove allows you to open the knife without removing your gloves, all be it with 2 hands. This would be impossible with most thumb nail opening knife and even with a Spydie hole it can be tricky.
Now; to get an idea of the size of the Tuff, there it is with a Para Military 2

Tuff is one of those knives that at first seems heavy and unwieldy, but becomes lighter and more argil more you become familiar with it.
The dimpled textured grip works well; they offer a solid hold without being rough.

Its stout CPM 3V blade is mated to a handle featuring a G-10 scale and stainless liner on one side and a sold titanium scale on the other. An oversized pivot and a Chris Reeve Integral Lock (R.I.L.) with a hardened steel insert ensure superior strength and increased wear resistance. [Paragraph from the Spyderco site]

:) I like it! It’s a big solid heavy duty folder that feels like it could punch above its weight and it weighs a lot.
It is still tight to open, but it’s starting to loosen up. There is no cut away in the handle to help unlock the blade, plus it is fairly tight lock so it can be hard. It’s a hard use knife so I suppose that is the price you pay for making sure it is not going to unlock accidently when using it.
Length overall 8.85" (225 mm)
Blade length 3.70” (225mm)
Length closed 5.15 (5.15” (131mm)
Cutting edge 3” (76mm)
Weight 6.3 oz (179g)
Blade steel CPM 3V
Blade thickness 057” (4.0mm)
Handle material G-10 Titanium