Seamless bent 304 stainless steel with mirror finish, standard 90° arc transition, smooth inner wall without creases, straight insertion sections at both ends match round tubes of the same specification. Serves as horizontal turning fitting for railing handrails instead of on-site bent tubes, uniform and beautiful corner radian reduces on-site processing procedures. Thickened tube wall resists external deformation, widely used for residential stairs and outdoor terrace guardrails.