Mason Bee House -Hand-Made in Wisconsin-Attract Orchard Bees to Your Garden This Mason Bee House for Your Garden will help attract pollinators 5/16" sized holes replicate the natural cavities that Mason Bees are attracted to Your Bees will pollinate and make your vegetation lush and fruitful Attractive diamond shaped house is 11" tall x 4" deep x 5" across Mason Bees are safe and docile to have around your home