The Bongers Percussion Massager are both fun and easy to use. It can be used to massage yourself or others. The Bongers tool provides an invigorating percussion- like massage called tapotement which improves circulation, eases muscle tension, and reduces the appearance of cellulite. It features long, ergonomic handles with adjustable straps for better reachability, reduced hand fatigue and improved grip. With the soft ball on the tip, the Bongers are good for breaking down muscle tension and stimulating circulation. Most people store tension in their neck and shoulders, and that's usually where Bongers are most effective. However, they feel good all over giving an invigorating, Shiatsu-like massage. Their durable and flexible metal shafts do all the work. Each set includes 2 cosmic Bongers tools.