Introducing the 50mm Forstner Drill Bit, the magical tool for customers who are ready to take their bird-watching to the next level! This bad boy is specifically designed to fit the 50mm Opaque Window Daylight Disk Insert into your existing birdboxes. Say goodbye to dimly lit birdboxes and hello to a vibrant world of colourful feathered friends! For customers who wish to to fit the 50mm Opaque Window Daylight Disk Insert into existing birdboxes. This will enable sufficient light into the Bird Box to improve the colour for daytime filming and preserve your camera battery life. This works particularly well with solar powered cameras enabling easy viewing of the wildlife in your garden without the wires, However if you're using any of our other cameras we would recommend our led lamp because the lamp gives a much better clearer crisp is there a crispy colour images.