Kit to install a top 2" NPH tapehead into an 800r 2" machine or to install a top 3" NPH tapehead into an 800r3 3" machine. This will not work if putting a 3" NPH head into an 800r 2" machine or 2" NPH head into an 800r3 3" machine. If you need one of those options call your CSPD CSR and we will assist with the right kit.