An underestimated rapid hammer-set anchor for concrete and masonry, ideal for interior timber-work such as battens and frames. Manufactured from a durable sprung steel. Special sprung steel to ensure uniform grip in substrate Zinc plated and passivated (3-5 microns)" Diameter mm: 8.0 Length mm: 180 Material: Carbon Steel Finish: Zinc Drill Hole Dia. mm: 8.0 Min Drill Hole Depth mm: 50 Max Fixture Thickness mm: 140 Fixture Hole Diameter mm: 9.0 Timco Express Nails - Zinc (Size 8.0 x 180 - 50 Pieces) in Silver