The ABS Company Ab Coaster CS3000The flagship product of the Ab Coaster Commercial Series product line features stainless steel rails for an ultra smooth ride, adjustable hand grips, and a free style motion seat perfect for high volume commercial fitness centers & athletic training facilities. Unlike traditional crunches, the Ab Coaster works your abs from the bottom up, while limiting stress to your neck, back and shoulders. The Ab Coaster CS3000 combines the simplicity of the ab