15" Spike Down Base w/Spikes & Tee (1) Designed specifically for leagues and facilities that do not have a mounting system in place. Made in the USA a designed to release upon impact. With the unique spike down feature, installation and removal are a breeze. The product is ideal for practice or play in any grassy area. Includes: x1 15” Spike Down bases covers, x1 Spike Down mounting tees, x3 spikes. Base dimensions: 15 x 15 x 2.5