A bike maintenance kit typically includes essential tools and supplies for basic upkeep. These kits often contain items like tire levers, a multi-tool for adjustments, a chain tool, patches or a spare tube for tire repairs, and sometimes a mini pump. These kits are designed to help cyclists address common issues on the go, ensuring they can handle minor repairs and adjustments during rides. It's a convenient and portable solution for maintaining a bike's performance and addressing unexpected issues during cycling.