Description: These flat head screws are great to use in confined areas where the head needs to be flush or below the surface. Screws have sharp threads that cut into a material such as soft metal sheet, plastic or wood. There are eight common lengths from 4mm to 20mm in this set for general purpose use. Well packed and assorted in a resealable transparent box for convenient storage and carry. Used widely in the home and office appliance, wood furniture, repair and inventions. Specification: Material: Nickel-plated carbon steel Type: Cross flat head Size and Quantity: M2*4mm 100pcs M2*5mm 100pcs M2*6mm 100pcs M2*8mm 100pcs M2*10mm 100pcs M2*12mm 100pcs M2*16mm 100pcs M2*20mm 100pcs Package Includes: 1 Piece set screws Assortment Kit (800pcs) : 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. Instruction is not included.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.