1、Each plastic sewing tool features a hole in the middle, just use a rope or elastic band to pull it to any place you need to install, which can help you evenly feed the fabric, the end has a bending point to tighten. 2、It is not suitable for ironed fixed seam, the flat end is long enough to prevent the fabric from curling on the presser foot and away from the needle. 3、These flexible threader tools can help you a lot save a lot in replacing the threader, without any damage to your clothes, ideal choice for quilts, tailors and craftsmen. 4、Just hold plastic drawstring threader with the threaded drawstring of 1 eye or 2 eyes, then insert the blunt end of the threader into the sleeve, and pull the threader through the sleeve until the drawstring is fully inserted. 5、Suitable for replacing or adding drawstrings to your pants, sportswear, sports pants, shorts, coats, hoodies, shoelaces, handbags, hats, etc.