Ltpgtltstronggttarget both specific and general muscle areas with just one productltstronggtltpgtr ltpgtthe 66fit massaging roller allows you to concentrate on targeted trigger point areas but also to work on larger more general areas of muscle soreness fatigue and discomfortltpgtr ltpgtas the two independent freely moving spiky balls move over the body the user is able to target specific areas of concern to help relieve muscle aches and pains and eliminate unco