Flea collar | Flea and tick prevention for dogs | Flea collar for dogs | Dog flea and Tick Collar for Dogs | Dog Flea Collars for Small Big Dogs Flea Treatment | Flea Protection Pet Flea Tick Control This set Includes one of each size: 1.5" x .75" and 2.75" x 1.375 3.3" x 1.75" and 4" x 2" 5" x 2.5" and 6.25" x 3.125 8" x 4"