Pricing mentioned is for a SET. Requires a minimum buy of 1 SET. Spiral Flute Screw Extractors - 535/524 Series Set; Hazmat=False; Features=Aggressive left hand spiral design for extra gripping power;Designed to remove broken studs, bolts, socket screws and fittings;Extractor Size and recommended drill Bit Size are etched on each tool;Spiral Flutes are designed to embed themselves deeper into the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases; StandardPack=5SET/CTN; CountryOfOrigin=GB; Includes=EX-1 - EX-5; Packing Type=Carded;