Size: 10X & 30X. Model Number: EJ-JDK-10X&30X- White LDD. Flexible and Stable Gooseneck Arm: Thicker and sturdier than standard lamp arms on the market, the durable silicone gooseneck allows smooth bending, rotation, and full 360 positioning while securely holding its shape to keep the light and magnifier precisely where needed for crafting, repairs, painting, and reading.