Camburg 1in. 4130 Uniball Cup (1.50in. width)If you're looking to build your own upper lower arms, spindles or links we have what you're looking for. We CNC machine our uniball cups in house from US 4130 chromoly, not cheap mild steel or imported materials. Unlike most other companies we also machine the OD of the cup to remove the material scale finish for better welding. Don't pay more for something less. We designed our cups for maximum mis alignment and strength. These can be MIG or TIG