The Milwaukee 8-inch Torque Lock Locking Seamer provides faster tool setup and more locking force. The locking seamer's thumb screw provides offers a more convenient geometry for hand force while providing clearance to generate more torque with the unique screwdriver through-hole design. The seamer's hardened jaws give increased gripping power and they are made of forged alloy steel for maximum durability, perfect for the toughest of job sites.