Features:_x000D_ _x000D_ Made from high quality carbon steel, these corner brackets are durable and solid. _x000D_ Surface is plated with nickel for good rust resistance and better performance._x000D_ _x000D_ Widely used to reinforce right angle corner joints of aluminum extrusion profiles. _x000D_ There are total 10 pieces of brackets in one pack that you can use for many projects. _x000D_ EU-2020, EU-3030 and EU-4040 for your choice to connect different profiles, EU-2020 is for profiles with 6mm slot while EU-3030 and EU-4040 are for that with 8mm slot. _x000D_ The EU-3030 is suitable for 3040, so it is marked as 3040. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: Carbon steel _x000D_ Surface Finishing: Nickel plating _x000D_ Type: EU-2020, EU-3030, EU-4040 (Optional) _x000D_ Quantity: 10pcs _x000D_ _x000D_ Package Includes: _x000D_ 10 x Brackets (screws are NOT included) _x000D_ _x000D_ _x000D_ Note:_x000D_ Please note that customers need to match M6 machine screws by themselves._x000D_ There may be gaps on each model, which does not mean that there is a problem with the product. It is an interface designed to connect other aluminum profiles._x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.