Radiator screw coupling, angled 3/8" x 12 mm unfinished brass

Radiator screw coupling, angled 1/2" x 12 mm unfinished brass

Radiator screw coupling, angled 3/8" x 12 mm nickel-plated brass

Radiator screw coupling, angled 1/2" x 12 mm nickel-plated brass

Radiator screw coupling, angled 1/2" x 15 mm nickel-plated brass