DP×17 German Groz needle synchronous car needle high car tacking machine computer pattern machine leather needle

No. 7, No. 8, No. 9, No. 10 can be used for thin materials, such as silk lightweight fabrics

No. 11 and No. 12 can be used for knitting, general thin materials

No. 14 can be used for normal fabrics with medium and thin materials. Normal fabrics are thicker.

Often the fabric is thin
Size 16 can be used for thicker and thicker fabrics, denim, canvas, acrylic
cloth etc


Size 18 can be used for thick thread, wool thread, thick canvas, thick denim, etc.
extra thick