Specification:Features: These extractors will remove most kinds of damaged,rusted, broken or stuck screws from any wood or metal . They are made from premium steel with heat treatment forextra hardness and durability. 6 pieces heavy duty screw extractor with different sizesto meet multiple needs. 6 pieces high hardness drill bits functions good fordrilling. Drill bits can also be used to bore holes on wood,metal, plastic, brick and wall, etc. Easily remove damaged or broken screws, , studs, threadedpipe fittings and so on.Specifications: Condition: Brand New Material: Steel Color: As Picture Shown Suitable for Removing Broken Screws Size:4-6mm(1/8 -1/4\'\'), 6-8mm(1/4 -5/16\'\'), 8-11mm(5/16 -7/16\'\'),11-14mm(7/16 -9/16\'\'), 14-18mm(9/16 -3/4\'\'), 18-25mm(3/4-1\") Screw Extractors Size: 3.2mm, 3.7mm, 5.3mm,6.2mm, 8.3mm, 12mm Screw Extractors Length: 9cm/3.54in, 8.3cm/3.27in, 7.4cm/2.91in,6.5cm/2.56in, 5.7cm/2.24in, 5cm/1.97in Drill Bit Size: 3/32in, 1/8in, 3/16in, 1/4in, 5/16in, 3/8inDrill Bit Length: 12.5cm/4.92in, 11cm/4.33in, 9.3cm/3.66in,7.5cm/2.95in, 5.5cm/2.17in, 4.8cm/1.89in Weight: Approx. 392gPackage Included: 6 * Screw Extractors 6 * Drills Bits