The ONO Roller Grey is a handheld fidget toy designed for adults to help relieve stress and improve focus and dexterity. Made of durable aluminium, this full-size toy features a sleek grey design and is easy to clean with a damp cloth. With dimensions of 8.64 x 4.45 x 2.16 cm and weighing 113.4 g, this portable toy is perfect for fidgeting on-the-go. The ONO Roller Grey does not require batteries and comes fully assembled, making it a convenient and practical option for those looking to improve their concentration and reduce stress.