Agility Gear HD Stick-in-the-Ground Weave Poles (6 poles with Heavy Duty Spikes and Placer) Features Heavy Duty Spikes that can take a "Weaving and keep on Sticking". A Placer is included with grommets set at 24" allowing you to quickly and easily place your Poles 30 inch poles: 30 inches is the perfect height for leading your dog through the weaves Heavy Duty ( 5/16" diameter ) Corrosion resistant threaded spikes and Clean White ( no labels ) 3/4 inch ID ( 1" OD ) durable Schedule 40 PVC Striped in Blue with a two inch wide, vinyl tape that adheres well and is highly fade resistant. Fully assembled upon arrival