Feature:1. Material: Made of strong zinc alloy, it is carefully designed and crafted for superior durability and sturdiness and is not easily damaged. Its unique appearance and structure give it a unique personality and charm, rich in mechanical sense.2. Stress Relief Toy: It provides a unique relaxation experience for adults and effectively relieves stress. It is suitable for waiting in queues, meditation, timekeeping, quitting smoking and drinking and promoting communication, etc. It helps to enhance children attention and concentration. Suitable for anxious hands, especially for ADHD and ADD patients.3. Anxiety Relief: Great for releasing anxiety, relaxing, staying awake, ADHD, ADD, Autism and other attention deficit issues. Helps you calm down when you are stressed and fills your time when you are bored.4. Lightweight: Pocket size design, compact and portable, only need one hand to operate. Easy to carry anywhere, anytime, for travelling, work, home or classroom. Office, home, underground, station and other various places can enjoy the fun of this exquisite toy.5. Ideal Gift: Suitable for all ages, highly sought after stress relieving toys, each one is a handmade masterpiece, showing artisan skills and beautiful craftsmanship, worth collecting. Ideal for anyone, a simple yet wonderful present for all occasions.Specification:Item Type: Tank Stress Reducing ToyMaterial: Zinc alloy, PEISize: Approx. 5 x 3.8 x 2cm / 1.97 x 1.50 x 0.79in.Package List:1 x Tank Stress Reducing Toy1 x Hex Wrench1 x Storage Box