●16 PIECES CURVED TRACK-- Exactly a circle of train tracks. You can also build endless train railway with the straight track bricks. ●COMPATIBILITY - Fully compatible with standard sized bricks from other Major Brands. Children can play our bricks with their own collection. ●SAFTY -- Lab tested. Passed ASTM F963 and CPSIA. Made of child-friendly ABS plastic. 100% safe, nontoxic and friendly for kids ages 6+ years and up. ●FUN & CREATIVE - With Train tracks accessories bricks, children can build up their bricks city with their trains by innovation. Perfect for kids rewards, STEM education, Christmas or birthday gift. ●SERVICE WARRANTY - BroTex is strive to provide superior product and service. You can make your order without after-sale worries. Your shopping experience is guaranteed and your satisfaction is our top concerns.