Amazon.com: 8 Pcs Malleable Iron Universal Beam Clamps Malle I Beam Clamp, Electrogalvanized Beam C Clamp Max Jaw Opening 1 Inch (25mm), Supports 0.5 Inches Rods, Each Max Load 220lb : Industrial & Scientific
Garvin MBC-3816WM 3/8-16 w/ 3-1/8" Jaw Opening Beam Clamp, Malleable Iron | Capital Electric Supply