Fabrication is a whole lot easier when you can just pick up a pre-made piece and weld it in place. We offer a large selection of items to help you out when you are setting up a new chassis or just re-working an old one. raw. Quantity: Sold Each Hole Diameter: 3/8 inches Height: 1 3/8 inches Width: 1 1/2 inchesTab 3/8 Hole