Check the listing for details. 12Pcs HSS Hex Shank Drill Bits Tap M3-M10 Metric SAE Screw Thread Drill Bits Set. Color: Blue, Condition: New. Listed at 16.05 USD. Item number:3598Product description: Type Drill Bit, Hex Shank Drill Material High-Speed Steel Color Blue Item Diameter 1/4" Suitable For Drill Features HSS, Quick-Change, High Efficiency Application for drilling and tapping in aluminum, iron, metal, plastic, woodFeatures: 1. Made of premium HSS, is durable and sturdy for long-term use. Short size is not easy to shake, ensuring accurate drilling. 2. Quick change: These 1/4 inch hex shank of hex bit set well fits all power tools, achieving quick change more easily and securely. 3. High efficiency: Fast replacement composite cone uses drill edged principle drilling and tapping, one-step processing, greatly saves processing steps and time, improves working efficiency. 4. Wide spiral groove: The tap bit set also has a wide spiral groove, which allows chips to easily escape from the hole. 5. Application: Easy to operate, suitable for drilling and tapping in aluminum, iron, metal, wood, plastic, etc.Description: 1. Material: high-speed steel 2. Color: blue 3. Size: M3x0.5mm / M4x0.7mm / M5x0.8mm / M6x1.0mm / M8x1.25mm / M10x1.5mm 4. Head Diameter: #3 mm: 1/8" #4 mm: 5/32" #5 mm: 3/16" #6 mm: 1/4" #8 mm: 5/16" #10 mm: 3/8" 5. Handle Diameter: 6.35 mm(1/4")Package included: 12 x Hex Shank Drill Bit