... used to beauty, body slimming, hair regeneration, and effectively for skin anti-aging.II. Production Specifications* Roller Body: diameter ... PlasticFor skin regeneration1.0, 1.5mm ( use for solutions of thin epidermis, thin wrinkle, decline of elasticity)For anti-aging& rejuvenation of ... ruined skin1.5, 2.0, 2.5mm ( Use for solutions of thick ...