*** Made in the U.S.A .*** High Quality - C18200 - Chromium Copper Alloy for great Thermal Conductivity Price includes 2 pair of CNC Swiss Machined Spot Welder Tips Designed to get your into those tight areas 3/16" Welding Tip Contact Area M8 -1.25 Thread (fits Harbors Freight, Stark and many other Style Spot Welders Spot Welding Tips 3/16" 2-Pack - Close Clearance fits Chicago Electric w/ M8-1.25 Metric Mounting Threads