1. With 1/4 inch screw interface 2. Made of high quality aluminum, durable to use. 3. Adjustable length from 28 cm to 111 cm. The adjustable length allows you to shoot more with interest. 4. Convenient operation: Rotate the end pull lever clockwise and turn the end counterclockwise to lock it. 5. Packing include - 1* Selfie Stick - 1* Phone Clamp