Expand one set of Locating Legs to anchor securely within the pipe, while the second set of legs adjusts to perfectly align the pipe or flange. 4 Inch Pipe Fit Up Clamp - TechSouth Products Stainless Steel Strong Hand Tools "The Spider" Internal Pipe Fit-Up Clamps - CPF460 – Baker's Gas & Welding Supplies, Inc Pipe Clamp Expand one set of Locating Legs to anchor securely within the pipe, while the second set of legs adjusts to perfectly align the pipe or flange. Versatile Fit: Accommodates a variety of pipe diameters from 8″ to 12″, weighing under 20 lbs, providing flexibility for various welding projects Stainless Steel Contact Points: All contact points are made from durable stainless steel, offering superior resistance to corrosion and wear. 4 Inch Pipe Fit Up Clamp – TechSouth Products Internal Fit-Up Clamp ensures precise alignment for welding pipe to flange, or pipe to pipe.