One new 3-D printed HO atomic train shell for your consideration. I acquire the majority of my 3-D printing from Thinger verse . so please visit the website and view all of the amazing artists . The shell fits the Athearn PA-1 A,B unit chassis Shell Snaps onto chassis Some assembly required This model B unit is one piece unlike the previous model, which was two pieces glued together It comes with some accessories like grills , roof vents , side doors and endcap that will need to be glued on The chassis in the photographs is not included I do combine shipping if you have any questions, please ask before you make your purchase. Thank you