Features Sealing Transparent Box: The cross drive pan head screws are well -packaged, with a sealed transparent box, which can be effectively stored to facilitate storage and carrying. Wide Application: Self -Tapping screw combination set is widely used in electronics, electrical, mechanical, chemistry, metallurgy, hydraulic and other industries. Clear Thread: Screw combination kit has clear threads, which can be nailed to wear soft metal plates, plastic or wood and other materials. 8 Common Size: Carbon steel nickel -plating head self -attack screws have 8 common length from 4mm to 20mm, which is a very common tool fixed accessory. Easy to Use: The screw kit is manufactured in strict accordance with the standard, with reliability and high precision, small size, light weight, easy to carry and convenient to use. Features: 1.These pan head screws are great to use in confined areas where the head needs to be flush or below the surface. 2.Screws have sharp threads that cut into a material such as soft metal sheet, plastic or wood. 3.There are eight common lengths from 4mm to 20mmin this set for general purpose use. 4.Well packed and assorted in a resealable transparent box for convenient storage and carry.  5.Used widely in energy, electronics, electrical appliances, machinery, chemical, metallurgy, mold, hydraulic and other industries. Specifications: Material: Nickel-plated carbon steel Thread specification: M2 Thread tolerance: 5g Model: pan Head Self-Tapping Box Size: 13 x 6.5 x 2.5cm / 5.1 x 2.6 x 0.98inch 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 Included: 800pcs x Pan Head Self-tapping Screws Package List