brand new and high quality Tools for reping chips,Computer motherboard Quickly and efficiently magnetize screws Allows easy and precise handling in confine spaces Collects metal items from inaccessible places Demagnetize instruments for use in electronics Leaves on hand free for positioning work piece How to use: While making a pick up on the screws, just insert the screwdriver into the "+" marked end to give a magnetized that the screws can be easily to pick up. While reping the electric appliances and electronic component, just insert the screwdriver into the "-" marked end to give a demagnetized instantly How to use: While making a pick up on the screws, just insert the screwdriver into the "+" marked end to give a magnetized that the screws can be easily to pick up. While reping the electric appliances and electronic component, just insert the screwdriver into the "-" marked end to give a demagnetized instantly Size :40 x 29 x 19mm Quantity : 1 Set Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!