Specifications: 4x4" Inches (101.6x101.6mm), 1/4" (6mm) Thickness, 1/2" Hole, 15.5oz (441g) Weight, A36 Carbon Steel, Laser Cut, Sandblasted, Lubricated. Sidco Supply's 4x4 premium-grade Weldable Metal Steel Base Plates are the perfect solution for your structural fabrication needs. Engineered with precision and crafted to excellence, our metal base plates are specifically designed to provide uncompromising strength and stability for a wide range of applications. We are committed to delivering t