This pie crust shield is perfect for homemade or frozen pies with a diameter of up to 10 inches / 25.4 cm and can easily be adjusted for smaller sized pies. The only thing you have to do is to place your pie crust shield onto the top of your pie and bake it. The pie crust shield is reusable and prevents the edge of the pie crust from overbaking. To clean, use warm soapy water.