Quality Supported Structure: The pergola top bracket kit made of 2.7mm thickened high-quality metal and -coat for extra resistance,it will not easily break off and be out of shape when using. Adjustable: Our Inner diameter of the pergola extension bracket is 3.55 inch,use for 4 x 4 Post (Actual 3.5inch x 3.5inch on market ),the other side can be adjusted according to the actual size of the wooden column.(Can be opened to fit post already being used on pergola) Enhanced Stability: These brackets are extremely thick and heavy.Rugged craftsmanship provided additional structural stability and support for wooden construction projects. DIY Pergola Kit: If you are looking for a modern pergola to build or extend your pergola, but don't want to spend a lot of money,our pergola hardware is a good choice.Use this extension pergola bracket used for balcony,courtyard,patios,commercial venues and park,you can build the perfect outdoor place gathering or entertainment. 3-WAY T BRACKET: Each heavy duty bracket has pre-drilled holes,just cut to the length you want and choose desired location,mark it,drill holes on the wooden , assemble and lock nuts. Colour:black Material:Metal Package Contents: 2 x Pergola Corner Brackets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Quality Supported Structure: The pergola top bracket kit made of 2.7mm thickened high-quality metal and -coat for extra resistance,it will not easily break off and be out of shape when using. Adjustable: Our Inner diameter of the pergola extension bracket is 3.55 inch,use for 4 x 4 Post (Actual 3.5inch x 3.5inch on market ),the other side can be adjusted according to the actual size of the wooden column.(Can be opened to fit post already being used on pergola) DIY Pergola Kit: If you are looking for a modern pergola to build or extend your pergola, but don't want to spend a lot of money,our pergola hardware is a good choice.Use this extension pergola bracket used for balcony,courtyard,patios,commercial venues and park,you can build the perfect outdoor place gathering or entertainment. Enhanced Stability: These brackets are extremely thick and heavy.Rugged craftsmanship provided additional structural stability and support for wooden construction projects. 3-WAY T BRACKET: Each heavy duty bracket has pre-drilled holes,just cut to the length you want and choose desired location,mark it,drill holes on the wooden , assemble and lock nuts.