Easy installation: push square tube into the connection and attach with screws. The smooth inner fit ensures a firm grip and balanced support of all three outlets in your pipe frame or furniture project Excellent fasteners for building lightweight shelves, pet enclosures, chair frames, divider supports or reinforcing chain link fence structures Ideal for making clean vertical connections in fence railings, greenhouse frames, shed supports or furniture constructions Made of high-strength aluminium alloy for longer durability, can be used over a long period of time Suitable for indoor and outdoor structural applications, including garden sheds and fences, Manufacturer: OSNIYAW