30pcs M6x20mm Wing Butterfly Screws Bolts, Carbon Steel Butterfly Screws LED Display Digital Tubes Inner Dia :

Inner Dia :

Made of Aluminum alloy

Body Size: 93 x 40mm/3

and pull the arm to the instrument or machine for pulling to count

30pcs M6x20mm Wing Butterfly Screws Bolts, Carbon Steel Butterfly Screws LED Display Digital Tubes Inner Dia :Description: Material: Carbon steel, zinc plated, anti rust and anti corrosion. Usage: Twist the screw by hand without any other tools, easy to install. Feature: Special wing design, increases the lateral bearing surface and makes it easier to fasten, can be used repeatedly. Applications: Machinery and equipment, electronic equipment, communications equipment, hardware lighting, building bridges, and furniture decoration which require insulation,