M6 T-Slot Corner Bracket: 40pcs corner connectors with 100pcs screws; Suitable for Europe standard 3030 aluminum profile and 8mm slot. Stable Connection: Made of high quality zinc alloy, provides reliable and right angle connection. Durable Surface: Nickel plating ensures resistance to oxidation, rust and wear for long-lasting durability. Versatile Application: Ideal for aluminum frame structures, 3D printers, CNC laser cutting machines and construction industry. Easy Installation: Simply insert into the aluminum profile and fix it with the provided screws.