The Freshpark Ultimate Grind Kit is the only grind rail kit you will ever need. It includes two pole jam’s, a rainbow rail insert to make a 12’ long x 21” tall rainbow rail- as well as a 6’ long height adjustable flat bar from 12” to 15” tall. Wide flat bar construction, cold rolled steel, powder coated to perfection for the ultimate grinding experience. It configures in over 10 different ways and links to all of the Freshpark manufactured obstacles. Perfect for skate, snow, bike, scooters and more.