Kershaw Scrambler 3890 G-10 / Steel Handle, Titanium Carbo-Nitride Coated Bolster, Black Flipper - May be used on either manual or assisted opening knives. The flipper is a protrusion on the back of the blade that the user can pull back on, or flip, in order to move the blade easily out of the handle. Frame Lock - A portion of the handle (the knife frame) moves behind the blade to lock it into position during use. This is a safety feature of the knife. SpeedSafe - Assists you to open any SpeedSafe knife quickly and easily with a manual push on the thumbstud or pull back on the flipper; built into many Kershaw best sellers. Reversible - Pre-drilled holes in the handle enable the user to change either the tip position or the side on which the knife carries. Steel: 8Cr13MoV, titanium carbo-nitride coating