Foto4easy 50cm Flexible Gooseneck Tube for Photo Studio Lighting Light Stand with a 1/4 Male Thread and a 3/8 Male Thread At the End This is a 1/2 inch diameter, 20" goose neck with a 1/4 male thread and a 3/8 male at the end. It is designed to support a wide variety of cameras and photographic accessories, at many different angles. Strong, goose neck arm for attachment to tube. Tube length: 50cm /20" Weight: 430g Material: metal / copper