Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Metabo BE 751 0-1,000/0-3,000 RPM 6.5 AMP 1/2-Inch 2 Speed Drill
Product description: BE 751 DRILL, The new LT- and LTX-class cordless range are masters of their trade. There are many reasons for this: They are high-performance machines and extraordinarily light and compact. The new gear concept with its innovative torque clutch makes a wider range of applications possible, as the adjustable torque range has been virtually doubled. Thanks to our new motor and battery concept we have been able to make the machines more compact and even more powerful. We have also managed to protect your investment and increase service life through our new electronic single cell protection (ESCP) system which protects the battery pack and the machine from overloading. Our tried-and-tested AIR COOLED charging technology means the battery packs are, as usual, charged gently and quickly. Born through design to give you tools you can trust. For added piece of mind we now provide a three-year warranty on all machines, batteries, chucks and chargers.
Product feature: Metabo S-automatic torque limiting clutch, Die cast aluminium gear housing, Variospeed (V) electronics, Thumbwheel for preselection of speed - two-speed gear unit, Clockwise and anti-clockwise rotation
Product brand: Metabo
Target attributes: Chuck Size
Answer: attribute: chuck size
value: 1/2-inch
source: product title