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The SOG Twitch I is the original Twitch knife by SOG. This spring assisted knife is a wonder to hold and use. Smooth action, thin profile, and heavy duty materials all combine to make this a great knife to carry in your suit pocket our in your jeans. 2 3/4" closed. Features S.A.T. (SOG Assisted Technology). The blade is propelled open once the operator has initiated the one handed opening action. AUS-8 stainless blade with thumb stud. Twitch features a pass-through lockbar from which the kick of the blade sticks through. 6061-T6 machined aluminum handles with anodized graphite color. Designed by Spencer Frazer Knife Category: Spring Assisted Knife Blade Style: Drop Point, Plain Edge, Satin Finish Action: Side Open Blade Length: 1 7/8" Blade Thickness: 3/32" Blade Material: AUS8 Open Length: 4 3/4" Closed Length: 2 13/16" Weight: 2.0 Ounces HRC: 57-58 Handle Thickness: 5/16" Handle Width: 3/4" Handle Material: Hard Anodized Aluminum Clip: Tip Down Lock Mechanism: Spine Lock Safety: Slide on Spin