#Click here for a list of sakara's stretch-stop tapes White (Y) Half Bias Stretch-Stop Tape 2 rolls 10mm x 50m roll Unused product Width: 10mm Length: 50m Color: White (Y) This is an iron-on type with adhesive on one side. It is used to prevent stretching, and because it has moderate elasticity compared to straight tape, it is used for curved parts where you don't want stretching. It is used for necklines and armholes. It is also suitable for preventing overstretching when sewing thin fabrics or knits, which have moderate elasticity. A great value 50m roll. Also, black 1 roll, 3 rolls, and 5 rolls are also available. Please understand that these are used items before purchasing.