2 in 1 drill chuck key ratchet spanner Material and durability: Made of steel for wear resistance and a long service life. The nonslip handle provides a comfortable grip during use. Efficient chuck tightening: Designed to tighten or loosen the chuck on most electric drills and power tools. The ratchet function improves efficiency when changing drill bits. Dual sizes for versatility: Small head diameter 8 mm and large head diameter 17.2 mm to fit different chuck sizes, enabling use across a range of drilling applications. Easy and convenient operation: Positive and negative ratchet switch allows forward and reverse rotation for quick loosening and tightening of the drill chuck. Practical use scenarios: Quickly swap drill bits on wood or metal projects without fumbling. Use with tools that have different chuck sizes, reducing the need for multiple tools. Work in tight spaces or during maintenance tasks where fast chuck adjustment is needed.