design bird deterrent discs, more effective. Double-sided holographic reflective plastic discs, light deterrent, no harm to birds. Rotate 360 degrees to reflect light in all directions. Keep birds away from your house, garden, window, orchard, yard, etc. Protect your property. Easy to use. Hang it anywhere you need to repel birds. Hundreds of birds are affected by this light-reflecting discs. Such as Pigeon, Hawk, Seagull, Sparrow, WoodBirds, Crow and Goose etc. eyes are very sensitive to light. The disc can reflect different color of dazzle light which confuse the eye. The light keep birds away. To maximize effect, we suggest putting the discs in a place with breeze and direct sunlight. The main picture is the assembly effect picture. Shipping in disassembled, requires assembly before use. Colour:As Shown Material:Plastic+Metal Package Contents: 8 x rotating flective discs(Rhombus) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.