The strategic introduction of the feature-rich I-35 was aimed at bringing new innovations to our already very well respected I-Series Rotor line. Since introducing the I-35 we have upgraded the very popular I-25 and I-40 lines to have most of the same great new innovations. These include Auto Arc Return, Non-Strippable Drive and Non-Reversing Full Circle. The addition of these innovations to other models has essentially rendered the I-35 obsolete. If you are looking for a model similar to the I-35, we suggest the I-25 or the I-40 depending on the needs of your project.