IRWIN Tools Record Clutch Lock Bar Clamp, 30-inch (223130) 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.