The BERNINA Elasticator Foot #L14 guides and stretches the elastic as it is being sewn on. Ideal for lingerie, swimwear, sportswear and home textiles. For elastics of 5 to 20 mm width; adjustable amount of stretch for the elastic. Variable elastic width & position in relation to the needles and ompatible with L 850/860. Sew on elastic like a professional!