100% Band and high quality Name: Golf track paper Function: can the trajectory of the putter, Help you practice putting stability Fine workmanship and perfect style. High Wear-resistant and durability. tutorial: 1. You can practicing after fixing 4 corners with 4 balls Tee 2. The template can feedback the running trajectory of the head and whether the face is 3.The face is too open or too buckled will be reflected in the angular deviation between the actual face and the parallel trajectory 4.The face is not , which directly leads to the deviation between the ball's running course and the hole cup. 5. There are three pairs of holes in the middle to set the goal. There are deviation ranges of 0.5 / 0.75 / 1 degree. The putter can pass the ball through the middle of the ball T. 6. Inserting T on the trajectory line can set a more trajectory, limiting the putting surface between the trajectories Colour:White Material:PVC Package Contents: 1 * golf track paper Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.