Before purchasing, please be sure you’re buying the correct head for your clamp. This order is for the Irwin MED-DUTY Quick Grip Clamp (300 lbs of force). It does not fit the micro-duty 35lb, mini-duty 140lb or heavy-duty 600lb trigger clamps.
I am happy to answer any questions you may have. If you're not completely satisfied with your purchase please let me know. I offer a 100% satisfaction guarantee and will do everything I can to make it right.