Multi-purpose grooves for various applications, including screw removal Vertical grooves: Grip and turn stripped screws even in tight spaces. Micro serrations: Fine serrations hold small objects firmly. Square serrations: Four different-sized square grooves securely grip wires and thin round bars without slipping. Round press: Gently holds round bars or thin pipes. Round serrations: Firmly grip nuts and round bars. Flat press: Flattens items like aluminum sleeves. Shin-Grip: Combines materials of different hardness for both comfort and rigidity. Equipped with wire cutter and simple crimping function.