Easily between bits in seconds! Swivel head flips and locks from drilling to driving. Works with your drill. Drilling to Driving in half of the time. Each drill provide convenience and accuracy. Maximize efficiency with the included adapter that allows you to between different sizes easily. Features - Color: Silver. - Material: Steel. - Size: 30.00X0.30X0.30cm/11.79X0.12X0.12in - Durable taps are made of high speeds steel, which can ensure sharp, fast execution and retain strength and efficiency. - The surface is treated with a titanium alloy, which greatly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life. - The product portfolio has high versatility. To choose the size that . - The split point tip and design increases cutting speeds while easy self centering prevents walking. - Great for general purpose use on hand drills and allows you to access hard to reach areas where jobber length drills can not go. Package list: 1 x drill bit (3 x 300mm) 1 x drill bit (3.5 x 300mm) 1 x drill bit (4 x 300mm) 1 x drill bit (4.5 x 300mm) 1 x drill bit (5 x 300mm)