Description: WIDE APPLICATION: These screws are suitable for door handles, machinery industry and other small repairs around the shop, garage or home furniture fastener etc. HIGH QUALITY: These hex nuts are made of iron material, provides strength and offers good corrosion resistance in many environments MEET YOUR NEED: There are 10 common lengths from 4mm to 20mm in this set for general purpose use which can meet your basic need. USED CONVENIENTLY: All screws are well packed and assorted in a resealable transparent box for convenient storage and carry. USAGE: These screws have sharp threads that cut into a material such as soft metal sheet, plastic, or wood. Specification: Material: Iron Color: Black Size: M2*4mm, M2*5mm, M2*6mm, M2*8mm, M2*10mm, M2*12mm, M2*14mm, M2*16mm, M2*18mm, M2*20mm Size Chart: Package Size: 10cm x 8cm x 4cm/3.94inch x 3.15inch x 1.57inch Package Includes: 250 Pieces Self Tapping Screws Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!