Material: Made from durable steel with a painted finish to prevent rust. Design: Features non-slip hexagonal shape - compatible with standard drills. Garden tools: Get a digger drill bit! Use: Ideal for working soil, planting root vegetables, flowers, shrubs and more! Options: 4 x 22, 4 x 42, 7 x 42, 8 x 30. Garden Plant Drill Bit | Living Social