Specifications‎:‎4pc screw & bolt extractor drill bits & guide set‎,‎ broken easy out fastener kit‎.‎Removes any screw or bolt‎!‎ ‎(‎Flat‎,‎ Hex‎,‎ Painted & More‎)‎ Durable hardened steel construction‎.‎ Quick & easy to use‎.‎ Works w/ any drill‎.‎ Removes any stripped screw in 10 seconds or less‎.‎ Even works on jagged‎,‎ uneven‎,‎ or rough breaks‎.‎ Self centering tip‎,‎ no walking‎.‎Compatible w/ quick connect chuck systems‎.‎ Usage‎:‎1‎.‎ With the speed can be change and ‎-direction of the electric drill‎.‎2‎.‎ The first thing to determine when using extractor and ensure the safety of the tool and will not be moving‎.‎3‎.‎ The screw head be damaged thicker than extractor‎,‎ with the drilling head end drill a hole‎(‎ deep enough‎)‎ in the middle of the screw head‎.‎4‎.‎ Reverse screw extractor and into the damaged screw counterclockwise‎,‎ until removed‎.‎Type‎:‎ Screw Extractor Drill Bits Guide SetColor‎:‎ As the Pictures ShowMaterial‎:‎ Alloy SteelQuantity‎:‎ 4 PcsFeatures‎:‎ 4 in 1‎,‎ Useful and Practical Tool‎,‎ Portable1# Extracted Diameter‎:‎ 3mm ‎- 5mm/0.12‎"‎ ‎- 0.2‎"‎ ‎(‎Approx‎.‎‎)‎2# Extracted Diameter‎:‎ 4mm ‎- 8mm/0.16‎"‎ ‎- 0.31‎"‎ ‎(‎Approx‎.‎‎)‎3# Extracted Diameter‎:‎ 5mm ‎- 10mm/0.2‎"‎ ‎- 0.39‎"‎ ‎(‎Approx‎.‎‎)‎4# Extracted Diameter‎:‎ 6mm ‎- 12mm/2.36‎"‎ ‎- 0.47‎"‎ ‎(‎Approx‎.‎‎)‎Total Length‎:‎ 51mm/2.01‎"‎ ‎(‎Approx‎.‎‎)‎Notes‎:‎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.‎