Master of the Toolbox: Are You a Tool Guru?Which tool is crucial for loosening or tightening screws with a hexagonal socket?43%Next Correct Incorrect An Allen wrench (or hex key) is a small, L-shaped tool used to tighten or loosen hexagonal bolts. Which tool is crucial for loosening or tightening screws with a hexagonal socket? Chisel Phillips screwdriver Flathead screwdriver Allen wrench 43%
