Material: The pin is made of high quality plastic and stainless steel wire plated with nickel, robust and durable, not easy to bend and oxidize, comes with transparent plastic boxes, easy to save pins. Colors:There are 8colors,100pcs of each color,rich color,including red,light green,blue,light blue,rose red,pink,yellow,white,As there are different colours,you can use them to colour code the work. Easy To Storage:Each color is kept in one place that you can get the color you need quickly. Dimension: head pin total length: approx. 3.8 cm/ 1.5 inches; Ball head diameter: 4 mm/ 0.16 inch; These head pins are tapering, please carefully use them to avoid stabbing fingers. Wide Application:These pins can be used for so many different things,convenient to use for daily sewing,wedding floral bouquet, banquet party, dressmaking, handcraft,Party,graduations，embroidery,creative art design and so on.