There are 8 types of sewing needles, so you can use it according to the fabric and method.
Capacity: 30 pieces
Size: Knotting needle (shithan) / Length 1.5 inches (39.0 mm) / Thickness 0.02 inches (0.53 mm) / 4 needle (sewing cloth) / Length 1.5 inches (29.5 mm) / Thickness 0.02 inches (0.53 mm) / 4 pieces of Meriken needle 6 / Length 1.0 mm (35 mm (35 mm) / Thickness 0 mm) Needle No. 7/approx. Length 1.3 inches (33.0 mm) / Thickness 0.02 inches (0.61 mm) / 4 needle #8 / Length 1.5 mm / Thickness 0.02 inches (0.53 mm) / 4 thread binding needles approx. length 1.8 inches (45.5 mm) / thickness 0.03 inches (1.0 mm) / 4 mm)
Material: Iron (nickel plated, gold plated), others.
(From Amazon.co.jp)