Collins Bamboo Stiletto BS4 This lightweight tool becomes an extension of your hand when sewing. Guide fabric under the presser foot. Keep fabric from shifting when sewing ends of seams. Grab and adjust straying fabric with sharp tip. Flatten fabric when sewing over seams. Guide and match curved seams. Turn under and press edges of appliques. Ease ruffles and gathers. Turn sewn fabric pieces to create smooth curves and crisp points, and much more.