Not for highway use. 1  16 in. diameter. 2  Pneumatic replacement tire for tough terrain. 3  Heavy-duty ball bearings, grease fitting and 5/8 in. bore.  Universal adapter kit includes flange bearings and nylon wheel spacers to accommodate 5/8 in. and 3/4 in. 1  axles. Compatible with most brands.  Ribbed tread.
Mae Jemison is famous because she was the first African American women to go to space.
Keynote Speaker: Dr. Mae Jemison. Dr. Mae C Jemison is an American engineer, physician and NASA astronaut who became the first woman of color in the world to go into space when she flew aboard the Space Shuttle Endeavour in 1992.