good quality aganist competitive price. Description: screws1) Specification: DIN,ANSI, BS, such ... SCREWS/MACHINE SCREWS/CHIPBOARD SCREWS,ETC..etc3) Material: Carbon steel,4) surface finishing : white zinc plated / yellow zinc plated,5) Packing ... produce the screws as customer's drawings and samples with high quality. high quality,bugle head drywall screws,black color