This is a replacement joystick knob for a large variety of different powerchairs. The hole is 1/4″ in diameter; however, if you need a different hole diameter, please let me know. I can adjust it. There is a screw on the back of it, so it can be tightened. We can confirm fitment on the following models; however, you should still measure the joystick shaft to make sure it is ¼” before ordering. Permobil F3, Permobil F3 Corpus, Permobil F5, Permobil Koala, Permobil M3, Permobil M3 Corpus, Permobil M5, Permobil M300, Permobil 300, Quantum 3, Quantum Edge 3, Quantum Q6, Quantum Q6 Edge, Quantum Q6 Edge 2.0, Quantum Edge 2.0, Quantum Stretto Q-Logic 3, Quickie 646, Quickie 636, Jazzy Passport, Jazzy 7, Jazzy HD, Terra/Terra SX B+B Enjoy Mobility, Air Hawk Power Chair, Alltrack HD/HD3, Vive Mobility Foldable Long Range Transport Aid, MobilityPlus+ Ultra-Light, Invacare TDX SP, Scewo Bro, Fold&Go MagshockThis is a replacement joystick knob for a large variety of different powerchairs. For the custom color combo please message me when you order it what color you would like the bottom leaves to be, and then what color you want the top rose petals to be. The hole is 1/4″ in diameter; however, if you need a different hole diameter, please let me know. I can adjust it. There is a screw on the back of it, so it can be tightened. We can confirm fitment on the following models; however, you should still measure the joystick shaft to make sure it is ¼” before ordering. Permobil F3, Permobil F3 Corpus, Permobil F5, Permobil Koala, Permobil M3, Permobil M3 Corpus, Permobil M5, Permobil M300, Permobil 300, Quantum 3, Quantum Edge 3, Quantum Q6, Quantum Q6 Edge, Quantum Q6 Edge 2.0, Quantum Edge 2.0, Quantum Stretto Q-Logic 3, Quickie 646, Quickie 636, Jazzy Passport, Jazzy 7, Jazzy HD, Terra/Terra SX B+B Enjoy Mobility, Air Hawk Power Chair, Alltrack HD/HD3, Vive Mobility Foldable Long Range Transport Aid, MobilityPlus+ Ultra-Light, Invacare TDX SP, Scewo Bro, Fold&Go MagshockThis was heavily remixed from a model created by Thingiverse user DViktor, and is licensed under cc-sa. Rose by DViktor on Thingiverse: https://www.thingiverse.com/thing:713600