The item is a set of 300pcs simple and practical nylon screw nuts assortment in different colors, which includes 180pcs in a plastic box, and 120pcs in other plastic box. They are mainly made of durable hard nylon and plastic materials, and easy to install and use. Features - ColorAssorted Color - Material: durable hard nylon and plastic. - and 300pcs Nylon Spacers Screw Nut Stand-off Plastic Accessories Assortment. - 180pcs in total, comes with the plastic box: Spacers Male-Female (6mm + 6mm, )10pcs Spacers Male-Female (8mm + 6mm, ) 10pcs Spacers Male-Female (10mm + 6mm, ) 10pcs Spacers Male-Female (12mm + 6mm, ) 10pcs Spacers Male-Female (15mm + 6mm, ) 10pcs Spacers Male-Female (20mm + 6mm, ) 10pcs Screws ( x 6mm ) 60pcs Nuts ( ) 60pcs - 120 pieces in total, comes with the plastic box: Spacers Male-Female ( 6mm + 6mm, )10pcs Spacers Male-Female (10mm + 6mm, ) 10pcs Spacers Male-Female (15mm + 6mm, ) 10pcs Spacers Male-Female (20mm + 6mm, ) 10pcs Spacers Female-Female (6mm, ) 10pcs Spacers Female-Female (10mm, ) 10pcs Spacers Female-Female (15mm, ) 10pcs Spacers Female-Female (20mm, ) 10pcs Screws ( x 20mm ) 20pcs Nuts ( ) 20pcs Package list: 540 * Nylon Spacers Screw Nuts in a Plastic Box (Black) 360 * Nylon Spacers Screw Nuts in a Plastic Box (White)