Composition: Hexagon socket countersunk head screws acc. to SO 10642 Steel class 8.8 zinc plated Contents: M3x8 -x16 / M4x10 -x12 -x16 / M5x10 -x16 / M6x10 -x16 -x20 -x25 / M8x20 -x25 -x30 / M10x20 -x25 -x30 -x40 1147 pieces