These Digital Counters Are Made of Plastic, They Are Lasting & Lightweight with Good Texture, Comfortable to Wear with Rings, & Not Easy to Break or Deform, Which Can be Repeatedly Applied for a Long Time Under the Appropriate Using. You Can Use These Finger Row Counters to Track Scores in Sports, Record the Number of Running Laps, Rope Skipping, Shuttlecock Kicking, Party Guests, Knitting & More; These Counters Are Widely Applied in Docks, Bus Stops, Schools, Laboratories, Competitions, Stadiums, Restaurants, Bars, Training Activities & So On.