Highlights: Function: Belly Application: AB Roller Coaster Colours: Random Type: Single-Wheeled Material: Stainless bearings + PVC Diameter: 18cm Product Description: Diameter Stainless Steel Bearings Abdomen Ab Roller Coaster Mute Muscle Trainer What’s in the box: 1 x Diameter Stainless Steel Bearings Abdomen Ab Roller Weight: 0.8 SKU: 190805111653