Premium Material: Made of chrome vanadium steel forging for maximum strength and flexibility. Qualified for cordless impact tools up to 2000 In or lbs of torque. 2 WAYS TO WORK: Locking collar allows for straight or angled driving. The head pivots up to 20 degrees for use in tight spaces and corners. Package included: 2pcs Flexible Screwdriver Drill Bit Holders with different length 88mm and 145mm, meet the needs of driving screws in different situations Quick Release: Built-in strong magnet, minimizes drops and reduces wobbling, can be perfectly matches any 1 or 4" hex shank screwdriver bit , simply slide the sleeve forward to release the bit. High Compatibility: 1 or 4" Shank allows for use in any chuck or impact driver include electric screwdriver, manual screwdriver, electric drill, pneumatic drill, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.