11PCS SCREW EXTRACTOR SET, EASY OUT SCREW EXTRACTOR SET, DAMAGED SCREW EXTRACTOR TOOL WITH HOLDING WRENCH FOR RUSTED OR STRIPPED SCREWS, STUDS, FASTENERS Easy out Screw Extractor Set--1pcs holdeing wrench,5pcs screw extractors+5pcs drill bits.Screw Fastners Removal Tools are well preserved and sorted in a portable case,easy to access and carry. Easy to use-- First drill holes in the damaged screws (★slow speed),then gently tap the extractor into the hole and use a wrench to rotate counterclockwise to take it out. (Drill bits' diameters and recommended extract diameters of broken screws are etched on case.) Wide Application--Used to remove damaged, rusted or stripped screws, studs, fastener, metal water tap and water tube, etc. These Drills can also be used to drill holes in wood, metal, plastic, bricks and walls. Sizes-- 5 Drill Bits:2mm/3mm/4mm/6.5mm/7.5mm. 5 Screw Extractors: M3-3.5mm / M4-4.5mm /M5-7mm /M8-9mm / M10-12mm.suitable for most screw bolt drilling size in the market, multiple choice for different needs, there is always suitable size for you.