Product Details: Screws Type: Hex Flat Head Screw Material: Carbon Steel Finished: Black Oxide Size: 1/4-20 x 1/2" /5/8" /3/4" /1" /1-1/4" /1-1/2" /2" Screw Groove Type: Inner Hex Package Quantity: 219 Pieces Material - Constructed from premium-grade carbon steel black oxide finish, known for its superior corrosion resistance properties, this hardware ensures exceptional durability and longevity compared to other options available in the market.Feature - The flat head machine screws are very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance.Application - Suitable for a wide range of industries and purposes including wind power, aerospace, office equipment, electronics, communications, shipbuilding, machinery, and more.Install Steps- Easy to install, drill a hole in the furniture, and then screw on the pad along the drill hole with a hex Spanner.