Amazon.com: The Step (Made in the USA) Original Health Club Aerobic Step Risers in Black for Use with The Step Aerobic Platform – Health Club Size (2 count)
Aerobic Step Board Home 28“ Fitness Exercise Health Trainer Workout W/ Riser 718910480361 | eBay
REEBOK STEP CLIP - Steps / Platforms / Rebounders - J. P. Lennard Ltd