Great British Steel: The bracket itself is made using 2.5mm Heavy Duty Galvanised Steel, which will remain rust-free forever, even in the event of the coating being damaged. Powder Coat Finish: As with other Framola products, this one comes with a textured black finish, which is both pleasing in appearance, as well as helping the outer of the bracket remain durable and hard-wearing. Getting The Righ tKit: To get the right Framola kit for the size of wood you are using, please select from the options "Suitable for". This will allow you to select between 3" x 3" (75mm x 75mm), 4"x4" (100mm x 100mm) posts or 6"x6" (150mm x 150mm) posts. Staggered Holes: The Corner Bracket features 14, carefully positioned, “staggered” screw holes to allow the screws not to collide when installing with other parts of the Framola kit. Each screw hole is 7.5mm wide to comfortably allow for timber railway sleeper screws to be used. Dimensions: Width: 157mm - Height: 157mm - Depth: 157mm, Manufacturer: Indoor Outdoors