This slim, portable design allows you to practice anywhere. Do you ever find yourself practicing putting on a crowded golf course, having to be mindful of others? As someone who is shy and introverted, I was hesitant to join others in aiming for the cup. So, I created a tool that allows you to practice putting even in the corner of the practice area. It's a thin, portable design that can also be used at home, making it a win-win. I found it so useful that I'm now selling it. If you're in the same situation, please consider purchasing it! And even if you're not, please do! This tool allows you to check if you're hitting the face straight. The opening width is approximately 59.5mm and the height is approximately 49.5mm. Tees are not included. This is a set of two black practice tools, priced as a set of two. You can practice slowly at home or in the corner of the course's putting green when it's crowded. It stands on its own by inserting a tee, making it convenient to carry. However, it may wobble slightly. * When standing with a tee, it will be slightly tilted, so the opening height will be about 5mm lower, but the ball can still pass through. It can be used as a substitute for a cup when laid flat. It stands on its own by overlapping the grooves. Due to being a 3D-printed product, there may be unique layer lines on the surface and sides. Please understand. Item...Putter Practice Tool