Salon Systems Marvelash Russian B Curl Lashes 0.05 (Ultra Fine) asrtd black (approx 7,500) are lightweight lash extensions with optimum B curl. Includes adhesive peel-off strip for fast, easy application. Ideal for Russian volume lashes, layering and feathering. Assorted lengths - 8,9,10,11,12mm. 0.07 extra fine. Black. Synthetic hair.