Product Description: Quantity: one set (2 pieces) Length: 11.8 inches (30cm) Material: High carbon steel + plastic. Color: Black Hex Socket Head: 1/4 inch (6.35mm) Hex Shank: 1/4 inch (6.35mm) Wide rotation range of internal shaft to extend drill into hard to reach areas, compatible with small wrenches, cordless screwdrivers, drills torque wrenches, etc. 2-in-1 Angle Drill Bit Set: It comes with a 105 degree right angle bit extension bit and a 30cm flexible extension bit Brilliant and Well-Built Design: The right angle attachment is a 1 /4" standard, helps you get out of occasions when you need the power, but stuck at full angles, and if need extra length to reach deep space? The extension bit is universal in all directions, allows you to get into those tough places and get the job done easier and faster Handy, Handy and Practical Little Tool: Save your toolbox space, show off your expert abilities and save yourself from awkward places Not Designed For Heavy Duty Drills: These tools are perfect for light drilling, slow speed and screw driving, as cordless drill, ratchet driver, etc., not compatible with fast and heavy hammer drills, even though they are sturdy. Good torque rotation