The BirdieBall Hole Cutter is a handy tool that can be used to cut your own holes in your putting green once you receive your green and set it up. Useful for seaming projects, existing putting greens, and for people who want the flexibility of choosing the perfect hole placement to fit their putting needs. The standard hole cutter is the same size as the regulation hole on any golf course (4.25" in diameter). The hole cutter is also the same size as the BirdieBall putting green cup, and works in conjunction with the BirdieBall cup and flag system.   It is like a cookie cutter and easy to use (though the metal version is very sharp!). Just place the hole cutter on the surface of the putting green in the desired position and turn the hole cutter in a clockwise motion while pressing down. The plastic hole cutter will work with all BirdieBall RollTech Foam Putting Greens (both classic and double depth). If you are looking to cut holes in a BirdieBall Turf Putting Green, or any other existing artificial turf or carpet, you will need to choose the metal option. Specifications Hole Cutter: 4.25” in diameter (available in plastic and metal) *This product is not eligible for returns*