Our product is made of high-quality plastic, which is firm and durable to use.It helps you make your own mark to identify your golf ball, can also be used as a training aid. the perfect visual guide for your golf training. Features: 1. Lines can be drawn on the front and back of the golf ball liner. 2. Each golf ball liner is equipped with an oily pen for easy marking. 3. The marks can help you find a better angle and achieve your goals. 4. Made of high-quality plastic, which is firm and durable to use. 5. It is a good gift for golfer to train daily. 6. It can be carried in pockets, belts and other places, easy to carry. Specification: Condition: 100% Brand New Item Type: Golf Accessory Color: Red, Blue Material: Plastic Pen Size: Approx. 14.2 cm / 5.6 in Golf Ball Marker Size: Approx. 8.2 * 5 * 5 cm / 3.2 * 2.0 * 2.0 in Weight: Approx. 36 g / 1.3 oz Package list: 1 * Golf Ball Marker 1 * Pen Package List 1Lines can be drawn on the front and back of the golf ball liner. 2Each golf ball liner is equipped with an oily pen for easy marking. 3The marks can help you find a better angle and achieve your goals. 4Made of high-quality plastic, which is firm and durable to use. 5It can be carried in pockets, belts and other places, easy to carry.