20 mm EN8D STEEL TMT Rebar Coupler Manufacturer Rebar Coupler, Taper Coupler, Parallel Threaded Coupler Manufacturer Length - 20 mm Diameter - 28 mm Usage/Application - Industrial Surface Type - Color Galvanized Material - Mild Steel Minimum order quantity: 600 Piece A 20 mm EN8D Steel TMT Rebar Coupler is a mechanical connector designed to join two 20 mm diameter rebars (reinforcing bars) made from EN8D steel that have undergone Thermo-Mechanical Treatment (TMT). These couplers are used in the construction industry for ensuring strong, secure, and efficient connections between rebars.