Fongmore 3Pcs 1/4" Hex Shank Drive Quick Change High Speed Steel Titanium Step Drill Bit Short Length Drill Bits for Hole Drilling 3-12mm 4-12mm 4-20mm

• HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating.
• The step drill bit is durable and strong enough to punch and drill clean holes in materials like wood, plastic etc. It can also help to enlarge existing holes and clean edges.
• Quick change 1/4-inch hex shank makes for easy, convenient bit switches and is compatible with impact ready power tools.
• Widely Application: Ideal for drilling holes in plastic, aluminum, iron and many other types of sheet metal (Not recommended for stainless steel or any other harder metal).
• Work as tapered drill bit, step up bit, step drill bit, step bit, step drill bits for metal, step drill, step drill bit set, step drill bits.

Specification: Material: High-speed steel(HSS 4341) Color: Titanium coating Type of shank: 1/4 inch hex / 6.35mm Package includes: 5 step drill bit: 4-12 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm) 9 step drill bit: 4-20 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm ) 10 step drill bit: 3-12 mm (3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm) A durable Oxford fabric storage bag