Note:Light taking pictures and different exhibits could cause the color of the object within the photo somewhat diversified from the genuine thing. The dimension allowed error is +/-2-3mm. Specification: Brand new Material: Nylon Color: Black Nylon M2~M5 SEM phillips pan head screws and nuts assortment kit. Made of Nylon, non-magnetic, thermal insulation, corrosion resistant, etc. Never rust. Packed in a plastic box, convenient to carry. Convenient to use. Durable and practical. Type Length Quantity M2 Hex Nut M2 10pcs M2 Washer M2 10pcs M2x4mm Screw 5mm 5pcs M2x12mm Screw 14mm 5pcs M2.5 Hex Nut M2.5 10pcs M2.5 Washer M2.5 10pcs M2.5x6mm Screw 8mm 5pcs M2.5x12mm Screw 14mm 5pcs M3 Hex Nut M3 10pcs M3 Washer M3 10pcs M3x6mm Screw 8mm 5pcs M3x12mm Screw 14mm 5pcs M4 Hex Nut M4 10pcs M4 Washer M4 10pcs M4x8mm Screw 10mm 5pcs M4x16mm Screw 18mm 5pcs M5 Hex Nut M5 10pcs M5 Washer M5 10pcs M5x10mm Screw 13mm 5pcs M5x20mm Screw 23mm 5pcs Package included: 150 x M2 ~ M5 Screws & Nuts Kit