The fabric is fastened with a 0.02 inch (0.4 mm) ultra-fine needle, so the fabric does not float, and there is less shifting in the overlapping fabric.
The pieces are arranged together to create a beautiful finish.
Easy to stick and leaves no residue
When sewing straight lines, etc., it is convenient because you can sewing the needle while you hit the waiting needle without needing to stick.
The head is made of iron resistant glass.
(From Amazon.co.jp)