Wide application: these twin needles function as good accessories for sewing machines, compatible with most kinds of sewing machines Delicate design: each double-needle fitted with 2 needles can be easily threaded 2 same or different decorative lines to simultaneously stitch in a straight or pattern way Easy to collect: these twin double needles come with a small plastic durable box which allows you to conveniently collect and store twin needles Durable material: these machine twin needles are made of stainless steel and plastic with good quality, they are durable and sturdy for a long lifetime Package: totally includes 12 pieces twin needles in 3 different sizes, 2.0/ 90, 3.0/ 90, 4.0/ 90, each size has 4 pieces; And the sizes are clearly marked on the blue area 12 pieces twin needles, double twin needles with plastic box for household sewing machine, 3 sizes mixed 2.0/ 90, 3.0/ 90, 4.0/ 90 Easy storage: These twin double needles come with a small plastic durable box which allows you to conveniently store and carry when going out. Widely apply: These machine twin needles are made of stainless steel and plastic with good quality, they are durable and sturdy, serving as good accessories for sewing machines, compatible with most kinds of sewing machines. Practical tools: These double twin needles can sew 2 same decorative lines at the same time; You can thread them with 2 different colors of threads to make beautiful crafts in a straight or pattern stitching way. Specification: Material: stainless steel, plastic Needle color: silver and blue Plastic box size: approx. 5.4 x 5.4 x 2 cm Needle size: 2.0/ 90, 3.0/ 90, 4.0/ 90 (4 pieces each size) Quantity: 12 pieces twin needles Package includes: 12 x Twin needles 1 x Plastic box