An extra set of three Blocker inserts, made to be used with the Pebble All-in-One Puzzle Toy. These Blockers transform Pebble from a slow feeder into a treat dispenser, with various opening sizes and difficulty levels. 

Each box contains three sets of Blockers (top and bottom pieces included). 

Note: While the Pebble Blocker attachment is made of tough food-grade silicone, it is not meant to be chewed on. Please supervise your dog and prevent them from shredding or destroying the Blocker.