Features: 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. Specifications: Material: Nickel-plated carbon steel Type: Cross flat head Size and Quantity: M2*4mm 100pcsM2*5mm 100pcs M2*6mm 100pcs M2*8mm 100pcs M2*10mm 100pcs M2*12mm 100pcs M2*16mm 100pcs M2*20mm 100pcsBox Size: 13.2 x 6.5 x 2.3cm / 5.19 x 2.56 x 0.9"Package Includes:800pcs x Self-tapping Screws .