Hex Head Multi Spline Screw Extractors 532 Series Plastic Case Set, 25 Pc, 1 8 in to 7 8 in ORS NASCO Water based gel Reduces spatter buildup on Water based gel Reduces spatter buildup on nozzles and tips Excellent cooling properties for longer tip and nozzle life Can dip hot or cold Gauge is rust proof and bend proof Die blanked to eliminate sharp edges and add to accuracy Permanently etched for long life socket screws and fittings for high torque applications Aggressive left hand spiral design for extra gripping power Extractor size and recommended drill bit size are etched on each tool Various set sizes Designed to remove broken studs