Hardwood Anti-rattle Panel Wedge; designed to stop fence panels rattling when fitted into slotted concrete posts. To ensure a tight fit, tap the wedge into the gap between the fence panel and the post slot. Fix the wedge in position by driving a screw into the fence panel through the pre-drilled hole. For best results fit 4 wedges per panel, this may vary depending on your specific fence panel and concrete slot dimensions. This wedge is pressure treated brown.