Specification: Material: Steel Color: Black Thickness: 1.4mm Max.bearing capacity: 15kg Size: 16cm*8.5cm*20cm Maximum height after stretched: 27cm Stick Minimum Length: 15cm Stick Maximum Length: 22cm Installation: Ceiling Mount / Wall Mount Ultra high temperature electrostatic dusting Features: 1. Durable material,reliable quality and good performance. 2. Adjustable 360° swivel, holder can be tilted under 180°. 3. Powerful bearing capacity, can carry max. 15KG. 4. Extendable design, can adjust the length of stick to meet your need. 5. Can be used to install surround speakers and other mini speakers in KTV, meeting room and schools, etc.