Mission Dartboard Wedges - Pack of 8. Mission black Silica board packers are made from high quality silica material. The wedges enable players to secure their board from roating during play and can also help reduce noise during play. Mission Dartboard Wedges - Pack 8 - Black. To help pack out your dartboard and keep it secure. Colour: Black. Mission Dartboard Wedges - Board Packer - Pack 8 - Black