Soft-Grip handle is larger and more ergonomic, allowing high clamping pressure with less effort. I-beam bar reduces flexing and bowing. Locking clamp is great for general workshop needs. Clutch lock mechanism lets you quickly and easily adjust jaw with the touch of a button. Larger clutch plates allow for easier release and increase durability and dependability. IRWIN® Tools QUICK-GRIP™ Bar Clamp, 18-Inch (223118)