Designed to remove damaged nuts and bolts. Manufactured from heat treated Chrome Molybdenum steel. Reverse spiral flutes are designed for maximum grip. Suitable for use with a spanner or socket. Low profile for applications with restricted access. Supplied in storage case.11pc Spanner Type Bolt Extractor Set• Designed to remove damaged nuts and bolts.• Heat treated Chrome Molybdenum steel.• Reverse spiral flutes are designed for maximum grip.• Suitable for use with a spanner or socket.• Low profile for applications with restricted access.• Contents: 9 10 11 12 13 14 15 16 17 19mm 7 x 90mm Drift.• Supplied in storage case.• Model No. AK8183Model No: AK8183:Brand: Sealey:Contents: 9PTDSEAAK8183