SOG TWI-21 Twitch XL, SAT Assisted, Black Handle, Black TiNi, PlainEdge. Looking at the intricate construction of the Twitches reminds us of the workings in a fine chronograph watch; everything right and precisely in its place. These techno wizards feature a pass-through lockbar (patent pending) from which the "kick" of the blade sticks through. By pressing on the "kick", one is able to initiate the opening of the blade. S.A.T. (SOG Assisted Technology™) then takes over to finish opening and to securely lock the blade open. What makes these space-age little gems even more beautiful is that they are also affordable!
Cryogenic Heat Treatment. SOG's unique cryogenic heat treatment process increases the toughness and wear resistance of our blades. Taking the knife slowly down in temperature to less than -300 degrees and then back to room temperature. This stress relieves the material on an atomic level and increases overall strength as well as edge retention. Knife edges stay sharp longer with significantly less micro-fracturing and edge-chipping. Its this dedication to making your knife SOG sharp that sets us apart from the rest.
SOG Assisted Technology. SOG Assisted Technology works through the balance of opposing high-tension coil springs. As one opens the blade the force to propel the knife open becomes greater than the closing force and the blade will open on its own. The end result propels the blade out once the operator has initiated the one-handed opening action. S.A.T. works so well that right-handers can use their left hand equally well to open a folding knife (of course this works oppositely for lefties).
We warn you... this blade action is addictive! Play with it once, and you'll be opening it again and again!
Specifications:
- Blade Length: 3.25" x .125"
- Overall Length: 7.5"
- Closed Length: 4.25"
- Weight: 4.2 oz.
- Edge: Straight
- Steel: AUS 8
- HRC: 57-58
- Handle: Black Hard Anodized T6 Aluminum
- Finish: Black TiNi
- Reversible Bayonet Style Pocket Clip mounted at butt end
- Assembled in the USA