1/4-7/8" step drill bit. High speed steel makeup is ideal for cutting into stainless steel, aluminum, brass, copper, plastic, and more. Single cutting edge provides true round holes every time. Black oxide finish resists corrosion for longer life. Speed start tip starts fast and reduces the risk of bit walking. Laser etched markings for fast, easy hole size identification. ", Drills How Many Hole Sizes? : 1 Sizes No. 48899130: Minimum Size: 3/16", Maximum Size: 7/8", Step Range: 1/16", Drills How Many Hole Sizes? : 12 Sizes No. 48899135: Minimum Size: 1/4", 7/8" & 1-1/8", Drills How Many Hole Sizes? : 3 Sizes ---- 1. Since it is imported from overseas, even if it is new, the packaging may be slightly damaged, but please rest assured that this does not affect the product itself. 2. Product **and other products made in Japan are not applicable. 3. Packaging and instructions are in English.