Production range:3/16x7/8 1/4x3/4 1/4x1 1/4x1-1/4 1/4x1-1/2 1/4x2 Or M6x30 M6x40 M6x50 Installation Introduction: 1. Drill a hole with proper size through object to be fastened 2. Insert the Hammer Drive Anchors, 3. Set by driving expander pin into headThe other Zinc Alloy anchors: Hammer Drive Anchor Single/Double Expansion Anchor Lag Screw Shield Easy Drive Anchors/Speed Plug Lead Wood Screw Anchor