Wanna make your dog well-balanced both physically and mentally？Why not try this pets\' agility training kit which includes 8 cones with 3 holes on each side and 4 interlocking jumping rails? It is easy to adjust heights for your dog to jump. Take this set with you and have fun with your dog!Features: High quality and lightweight material Train pet\'s sense of balance Build and reinforce a strong relationship between you and your pets Teach pet to follow the orders correctly The height of the crossbar can be adjusted by the holes on the conical barrel