Keep your sink clean and your counters sparkling with this kitchen kit! Each brush features: Our green medium stiffness nylon bristles - color coded for kitchen use, a heat treated steel 1/4" quick change shaft compatible with almost all cordless drills,and a strong polypropylene plastic block for high durability. Our brushes are designed to leverage the muscle of your cordless drill! The high speed and power allow you to cut through messes up to twice as fast as with hand scrubbing. Here are some recommend uses: The bullet shaped original brush is a great general purpose tool for curved surfaces and corners - insides of mason jars, the drain in the sink, pots and pans, even drawers in the fridge! The 4 and 5 inch flat brushes are good for cleaning all the large flat surfaces in your kitchen - from counters and cutting boards to glass stovetops and oven doors. The 2 inch detail brushes are meant for all the finer details that other brushes might be a bit too big for.