Stainless steel,food grade,non-toxic,safe,Flexible,cut clearly,non-stick,and easy to remove and clean. This tool set includes 9 numbers.You can use it to make special and teach numbers. You can use it to make numbers shape cookie,chocolate,pie,candy,fondant. Use it to fry numbers shape eggs,which will attract to eat more,It also can be used to cut for to their numbers,With this cookie,you can easily make unique for holiday gifts and cookie trays. Easy to clean,you can in water with cleaner and then with towel to keep it dry for next use,With beautiful and eye-catching,this is a great for those who love baking.