Features 1、Made of premium carbon steel , strong and durable 2、Install it into the groove of the two profiles, and then tighten the screws 3、Used for straightening between two profiles 4、Comes with screws, convenient to install 5、European standard industrial aluminum profile, with reliable performance Specification Features: Made of premium carbon steel , strong and durable Install it into the groove of the two profiles, and then tighten the screws Used for straightening between two profiles Comes with screws, convenient to install European standard industrial aluminum profile, with reliable performance Specification: Material: carbon steel Weight: Approx.151g~384g/5.3oz~13.5oz Detailed size: Model(Optional) length width thickness screw hole Quantity 2020 100mm 10mm 5mm M5 6 3030 180mm 15mm 6mm M6 2 4040 180mm 19mm 10mm M6 2 4545 180mm 19mm 11mm M8 2 Package list: 1 set x Aluminum Profile with screws Package List