Material:ATHYUTH self drilling screws Made of high quality 410 stainless steel with good rust and corrosion resistance.
Product Features: Standard cross recess, not easy to slip,Deep thread, smooth surface without burrs and even by force, with quality workmanship and durability.
Wide application: 410 Stainless steel self-drilling screws are suitable for use in sheet metal, steel, aluminium, wood, plastic and other similar materials.
size: One Set Included 330pcs Self Drilling Screws , 7 Most-used Size: #8*1/2"(4.2*13mm), #8*5/8"(4.2*16mm),#8*3/4"(4.2*19mm),#8*1"(4.2*25mm),#8*1-1/4"(4.2*32mm),#8*1-1/2"(4.2*38mm), #8*2"(4.2*50mm). The complete range of sizes are enough to meet your various needs in life,and Complimentary a high-quality adaptation Phillips Bits
Package: Each size screws is organized in a different compartment of the sturdy and transparent plastic box. And the size on the label is clear to recognize the size that you need.