(2 pieces)Carbon steel building wall screws bolts rivets M12X400mm.

The bolts are made of carbon steel rivets, which are strong, rust-proof and durable; screws, also called female rivets, are used to hold parts in a fixed position, maintain alignment between different parts, or connect different parts; Easy installation: screws so that pins can be easily inserted into the mounting holes; Widely used in DIY remote control models, model toys, etc. Suitable for gear shafts, motor shafts, airplanes, airplane toys, short support shafts, shaft pocket molds, elevators, etc. If you have any questions about the product, please feel free to contact us, and we will do our best to help you.