These custom-designed "J" Brackets were created by us for our Just For Cats DIY installation kits. Dimensions 500mm long 150mm high 30mm wide 3mm thick. Material Each bracket is made from steel with a weather-proof powder coating that won't rust, fade, or degrade in the sun. The curved overhang shape helps stop cats vaulting over the fence. We designed these brackets ourselves because we could not find a solution that worked for us. Everything we purchased or tried was either: Flimsy garden brackets that bent under the netting's weight. Shelf brackets that were too short. Anything sturdy enough was either too expensive or overkill. Industrial fittings looked terrible on a residential fence. So we designed the profile we needed, the angle, the length, the depth of the curve, and we found a small manufacturer who could produce them properly. How Many Do You Need?For the full 10-metre run of netting in our kits, we recommend 6 brackets, one at each end, and one every 2.5 metres in between. That's the spacing that holds the netting's curve without sagging. It's what we've got installed in our own yard. Already got a Standard Kit (3 brackets included)? Add a bundle of 3 to bring your install up to full coverage. Already got a Complete Kit? You've already got the full 6. Building a custom run, or topping up an existing install? Add singles, 2-packs, or 3-packs as needed. What's the cost? Single — $19 Bundle of 2 — $35 (saves $3) Bundle of 3 — $50 (saves $7) Note that our Standard and Complete kits come with 3 or 6 J brackets respectively. Designed by us. Tested on our own fence. Backed by our 2-year materials warranty.