Kit includes check adapter, hex key for securing bits and 2 rotary bits.For fits RotoZip CH01 Steel Chuck Adapter Kit 1/8" Chuck Capacity,1/4" Chuck Mount Size, grinding, and sanding in tight spaces. Its ergonomic design and variable speed control allow for precise and comfortable operation. Complementing the rotary tool are two high-quality twist drill bits, crafted from durable steel alloy for exceptional strength and longevity. The hex shank design ensures a secure fit in the rotary tool, minimizing slippage and maximizing torque transfer. Whether you're working on wood, metal, or plastic, this set equips you with the tools to tackle a wide range of tasks. The included Allen wrench facilitates easy bit changes, allowing you to swap accessories seamlessly. With its compact size and robust construction, this set is an essential addition to any DIYer's or professional's toolkit.