VEXpro-217-5906-Ball-Shifter-Mag Encoder-Mount-Kit-VEXpro-217-5906-P-The-VEXpro-Mag-Encoder-is-a-sensor-that-measures-the-rotational-position-&-velocity-of-the-shaft-driving-your-mechanism-P-P-This-mount-allows-users-to-easily-mount-a-Mag-Encoder-to-any-existing-VEXpro-Ball-Shifter-No-need-to-modify-any-of-the-Ball-Shifters-that-you-already-own-P-VEXpro-217-5906-Ball-Shifter-Mag Encoder-Mount-Kit