This set contains two different sizes of tracking wheels,they use high-quality materials,high hardness,sturdiness and durability,no rust,corrosion resistance,and long service life,enough to meet your daily basic needs,ensuring that you use different types of perforation tool in the design process to facilitate the exquisite completion.With their finely serrated teeth,This needle point tracing wheel can place perfectly-spaced guide marks.They're designed to serve you well over time,Say goodbye to crooked lines or uneven patterns these tools are made for precision and ease.Perfect as a sewing tool for leather,paper,and cloth sewing pattern tracking wheel,light weight and very suitable for carrying and using when going out,-great for beginners and professionals.The handles of these two stitch wheels are ergonomic,which can relax your wrists and reduce hand fatigue,greatly reducing your strength at work,allowing you to work for a long time and fully enjoy the fun of sewing.A very good quality tracing wheel sewing tool;Specially designed finer,smooth serrate tooth,Ingeniously manufactured to ensure that the saw gear is firm during use so that it can be in a straight line every time,Lightweight and convenient,can be used in different places;For example:home,studio,school,etc.