... μm.3.preassembled for quick and easy installation.Sizea)Metric system:anchor diameter:6.5mm,8mm,10mm,12mm,16mm,20mm,24mm ... ; working length from 25mm to 300mmb)American system:Outer diameter:1/4,5/16,3/8,1/2 ... zinc plated carbon steel & stainless steel3. The sleeve anchor is a dependable anchor that can be used in solid brick, stone ...