Applicable model --- For all kinds of flat sewing machines, suitable for sewing thick and thin materials. Easy to Use --- Simple installation, used for leather sewing, to avoid the appearance of stitch length, reduce friction with materials and avoid inconsistencies in the length of materials. Quality Guarantee --- We provide one year warranty, 30 days refund, 7x24 hours email support. If you have any problem, please feel free to contact us, we will try our best to solve it for you. Beautiful workmanship --- Made of high quality materials, wear-resistant and Reasonable size and light weight for easy storage and transport. MULTI-PURPOSE --- Suitable for all wrinkled fabrics such as down jackets, leather coat, raincoats, bags, plastic products, etc. It acts as a lubricant and anti-wrinkle.