The 1.5mm A Spring Black is an essential component for hobbyists who enjoy building and crafting. With an outer diameter of 1.5mm and an inner diameter of 1.1mm, these springs are 150mm long and come in a convenient pack of two. Whether you're working on model kits, robotics, or other DIY projects, these springs provide the reliability you need. Assembling your projects with these springs will not only enhance their functionality but also bring a sense of satisfaction as you see your creations come to life. Perfect for ages 14 and up, these springs are a great addition to your toolkit.