No use force to insert the plastic or rubber T-shaped tube into the practice mat, avoid the damage of tee to the lawnSimulator are made of quality plastic material, elastic, hard to and not easy to fadefor indoor and outdoor driving practice, no more forcing plastic or rubber T-shirts into practice matsThese winter suit can be applied in homes, yards, the golf training sites, outdoor and indoor activities, can also be applied in golf driving ranges, golf course.Fit for Beginners, golf lovers, the plastic are for your golf training and practice, helpful to your golf skillscolor:BlueMaterial:plasticsize:35 x 45 x 19mmPackage Contents:16 x Golf teeOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.