Made of aluminum with an anodized finish for durability, the Leofoto LH-22 Mini Ball Head uses a screw-knob clamp and features a compact design, which makes it easy to travel with and use. Features of the Leofoto LH-22 22mm Low Profile Mini Ball Head: Ball diameter: 22mm/ 0.86in Panning base diameter: 30mm/ 1.18in Height: 55mm/ 2.16in Mounting hole: UNC1/4" Max load: 5kg/ 11lb Weight: 105g/ 0.23lb Leofoto LH-22 22mm Low Profile Mini Ball Head w/QR Plate LH-22