The phrase "to use both hands" means to use and work with both hands at the same time.
Sentences with «to use both hands»
In a large mixing bowl use a hand blender to blend together the eggs, coconut oil, maple syrup, honey, mashed bananas and lemon juice. (reciperebuild.com)
Proficient in using hand tools, power tools, shop tools, and operating test equipment used in the performance of repair and installation of electrical equipment. (jobhero.com)