AD rocket 1, high density PE roller 2, high quality carbon steel 3, wear-resistant spring 4, ... AD ROCKETProduct Description:1.Material compostion:steel,plastic or foam.2.Easy to use,no matter what fitness level.3. ... Maximum loading weight:120kg8.With comfortable seated postion.9.Total core will help you to get fit with ease and ... design hot sale Abdominal Training Equipment AD Rocket / Total Core