The standard tube insert kit with roll pin is used to make strong connections between Ready Tube profiles. It is comprised of a standard tube insert, one flanged hex head bolt and a roll pin and is used to connect profiles together when their lengths are divisible by 1.50”. The roll pin provides a smooth, clean finish and eliminates the use of protruding hardware. The standard tube insert kit with roll pin requires no additional hardware or machining services. Ready Tube also is available without pre-drilled holes; fastening these profiles may require machining services. Tip: Use a roll pin punch to install this product.