PVC Imported Double side plastic score reporter, 0-9 available; Price for 2 sets, one set is red number on white card and the other is black number on white card; you can have several sets to create any scores flexibly Material: Made from durable PVC (0.25mm thick), water-resistant and tear-proof, can be reused over and over Number Card Size: Approx. 2 1/2" Wide x 5" High (6.4 x 12.7cm); 2 rings for each number card set: Approx. 1" DIA (2.5cm) Suitable as scorekeeper for the traveling tennis player, flexible for indoor and outdoor sports games. Given the size of this scoreboard, it might be small for a tennis courts. See the second image for reference. Suitable to make your own score keeper as your special needs or replace the fade numbers on your old scoreboards Product Features** Price includes: 2 sets number flip charts, each set includes 11 number cards and 2 metal book rings for attachment ** Numbers Show on TWO Sides: Double side score reporter, each sets counts from 0 to 9, you can have several sets to create any scores flexibly ** Size: Number Card: Approximately 2 1/2"W x 5"H (6.4 x 12.7cm) Ring: Approximately 1" (2.5cm) in outside diameter ** Material: Made of durable PVC (plastic), waterproof and tear-proof, can be reused over and over ** Color Available: White number on black card Black number on white card Red number on white card GOGO Reporter Replacement Cards were designed to accommodate scoring for the traveling tennis player, and it is suit for baseball, softball, volleyball, football, hockey, school and family game, etc. With its large easy to read numbers and its lightweight compact design, it is one of the most convenient ways to keep score. These flexible number cards are great to make your own scoreboards as your special needs or replace the fade numbers on your old scoreboards.