【Professional design for small screws】Specifically designed for small damaged screws. The pattern on the top of the screw easy to disappeared, so we need to cut it , especially for some electric screws, Such as iphone tail screws, laptop screws, game box screws. It is a good assistant for you to repair your electric products. Small screws damaged and cannot be removed by a normal screwdriver. 4 size of cutting heads (0.8mm/1.0mm/1.5mm/2.0mm)can adapt to different size of screws. Cut a groove on the top of the screw and slowly remove it with the blade of the kit. 【The blade size can be adjusted by yourself】 The sharpening stone in the kit can polish the blade to a suitable size for the broken screw. 【Suitable for various small electronic products】It should be a member of your toolbox. It is Suitable for small electronic products damaged screws, including Iphone, Android phones, laptops, tablets, game consoles, etc. 【5V2A Adapter or 5V more than 10W power adapter required】 5V1A adapter may cause the grinder sometimes run and sometimes not run. The small-sized electric screw cutter is suitable for one handed grip. So it would be a good partner for you to do some DIY. This screw extractor is different with other extractor but you will understand it as soon as you get it . 【24-hour customer service and perfect gift for men】Perfect for both professionals and DIY enthusiasts for maintaining and repairingcell phone or laptop computers. It is a perfect gift for men.If you have any questions, please tell us and we will solve them as soon as possible. UPC 704090776363 ASIN B0DBLHGRQL Color External Power Supply Head Size 0.8mm, 1.0mm, 1.5mm, 2.0mm Brand Name NEWBILITY Item Weight 500 Grams Manufacturer Huake electric company Item Dimensions 9.84 x 11.81 x 7.87 inches Number of Items 20 Included Components 12 polish heads, knife stone,hexagon bar wrench，blade, host, USB cable Recommended Uses For Product Electronics Item Manufacturer Warranty Description 1 year manufacturer