... zinc alloy size: 13x31, 13x42, ,14x28,14x38 15x33.. drive anchor Zinc Aloy Easy Drive Anchor/Speed Anchor Material: zinc alloy size: 13x31 ... , 13x42, ,14x28,14x38 15x33.. drive anchorzinc alloy anchor1.material:zamak2.application:fire dydrant,installation of ... .the test pulling force valuelisted beneath were obtained using 200-250 kgs/cm2 concrete(no aggregated)