Material: extractor made of hard alloy, high strength and long durability. Set Of 10 Pieces: bolt nut remover fits heads sized 9, 10, 11, 12, 13, 14, 15, 16, 17 and 19mm. 10Pcs/Set Nut Remover Kit. Purpose: sturdy tools to help remove nuts, bolts, screw heads, studs, etc.
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