-----Quoted from the following site----- ・[Usage]- Aluminum Profile Built-in connection with beautiful and simple functions. ・[Material]- Consists of carbon steel, zinc-plated finish, excellent rust resistance, and durability. ・[Easy to Use]- The package comes with screws that are easy to install. Installation involves inserting into the pit of the joint of two profiles and tightening with a set screw. ・[Widely Used]- For building CNC routers, 3D printers, CNC cutters, CNC plasma cutters, robot projects, 3D carvers, machine guards, workstations, etc. ・Immediate purchase welcome ・Free shipping ○Please understand that items are stored at home and will be shipped in simple packaging. Please purchase after confirming (*´ω`*) ○Please check the actual photos for the condition of the product! ・In order to offer the product at a slightly lower price, we may ship it after removing it from the box due to shipping costs. ○Returns are not possible except for defective products, so please be sure to check the photos before purchasing. If you have any problems, please contact us [before evaluation]! Yuyu → Rakuraku Mercari delivery Or, there is a possibility that it will be changed to the opposite. 24918-21.1130.1500