Planet Fitness Deluxe Abdominal Ab Wheel Roller Home Workout Equipment for Core Exercise w/Dual Wheels and Soft Foam… $19.00 Make sure this fits by entering your model number. DUAL WHEEL STABILITY -Two smooth-rolling wheels glide easily and provide added stability during extensions and contractions NON-SLIP WHEELS – A deluxe outer shell on each wheel offers a non-slip design for better traction to keep you safe while rolling