This is a brass cast undercarriage set for the Revell Phantom. The nose wheel is a completely new master, and the main undercarriage parts have been modified. The main struts have been shortened by 3mm from advise given on reviews and modellers on Large Scale Planes, stating that the model sits at the incorrect angle with the kit supplied parts. All three parts drop in as a replacement parts, some kit parts will still be used but these new parts will offer better detail and strength.
Once you add a few bits of piping and hoses to the nose strut the set will be a great improvement to your kit.