Item Type: Speed Puzzle Material: Plastic 1Exquisite Craftsmanship: Pay attention to details, the surface of speed puzzle adopts frosted process to reduce scratches, comfortable to touch and play. 2Stable Structure: Firm bite, will not fall apart. High fault tolerance, easy to rotate. Appropriate size, ergonomic design, easy to hold and use, flexible operation. 3Center Open Cover Design: Built in elastic force adjustment system, you can use a screwdriver to adjust the overall elastic force of the speed puzze as you like. 4Wonderful Gift: Bright and delicate color, no fading, overall looks exquisite and cute, children will like it. Perfect gift for kids on birthdays, Children Day, etc. 5Plastic Material: Turning puzzle toy is made of excellent plastic material, safe and eco friendly, firm and sturdy, not easy to deforn, stable and durable.1 x Speed Puzzle