Tinksky 12.8mm Golf Stroke Bead Score Counter Color: White and green beads, black rope. Material: Nylon, plastic.Diameter of Beads: Approx. 12.8mm. Nylon braid stroke counter with plastic golf ball beads. A simple and very effective way to keep your score on the golf course. Slide a bead down after each stroke then count beads at the end of the hole for total score.