This is the E-Throttle built for the KTM Husk and GG E-Mini bikes. We have two styles. The ZRT-044 for the Pro Taper Micro Grips. And the ZRT-043 for the Odi Mini Grips. The reason why we have two different styles is grip fitment. We dont want our mini parents wire tying grips. So we made two different diameters.