The Finger Massager: Side A features steel massage balls with full 360-degree rotation that provide a rolling massage for the face, hands, legs, shoulders, neck, lower back, or any area experiencing muscle tension. The Hand Massager: Side B has double rubber rollers that apply pressure to individual fingers, helping stimulate blood flow and relieve stiffness. For Everyone: The thumb massager is ergonomically designed to fit comfortably in the hand, making it easy to use for self-massage or massaging others. Easy to Use: Compact and lightweight, it is portable and simple to use with adjustable pressure. This handheld massage tool can be used with essential oils, massage oils, or body lotions. High Quality: Constructed with durable ABS resin material and double rubber joint rollers, it is smooth, solid, and resistant to deformation. This two-roller design supports finger joint mobility and hand circulation.