Features A cavity fixing that is ideal for hanging radiators, brackets, hand rails and shelving units. When installing multiple anchors a TIMco Setting Tool is recommended for a fast and efficient way of installation. Specification Substrates - Drywall, Wood Panel Finish - Zinc Pack Qty - 100 Pack Type - Box Anchor L (mm) - 45 Screw L (mm) - 50 Grip Board (mm) - 16 - 23 MFT (mm) - 16 Screw Size (mm) - M4 x 50 Thread Ø (mm) - M4 Fixture Hole Size Ø (mm) - 4 Corrosion Rating (1-5) - 1 - Clean, dry & low humidity environments Thread Type - Metric Recess Type - Combi Point Type - B Point Head Type - Pan Standard Equipment 1x TIMco M4 x 45 Metal Cavity Anchors Box Of 100