An underestimated rapid hammer-set anchor for concrete and masonry, ideal for interior timber-work...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 substrateZinc plated and passivated (3-5 microns)"Diameter mm: 8.0Length mm: 180Material: Carbon SteelFinish: ZincDrill Hole Dia. mm: 8.0Min Drill Hole Depth mm: 50Max Fixture Thickness mm: 140Fixture Hole Diameter mm: 9.0.