Description 3 roll-on balls provide 360 degree massage direction Relieves sore and aching muscles Roll tension and stress away Focus on deep trigger points as if you are using your thumb. Less tiring than using your fingers, ergonomic design to let you use your whole arm strength for pinpointing trigger point release Portable, use anywhere Materia : TPR handle and exterior, Stainless steel roll-on balls NW: 160g
