Everything you need to start training with power in one package the best selling trainer in history paired with the first ever heart rate based power metre the ultimate training kit at an ultimate value along with lifetime warrantythe new fluid 2 trainernew resistance unit clutch know ensures optimum tireroller engagement every time you ridenew spring loaded skewer clamp for secure bike engagementnew leveling feet and now fits 29ersno adjustment needed flexible fluid resistance achieves ide