• High Quality Metal Extender Set
• The Set has 1 pcs CamBox Evo-128 High Quality Junction Box 
• Has 4 sizes: 30cm - 50cm - 75 cm - 100 cm
• Suitable For Narrow Surface Poles and Wall-Ceiling Metal Bracket 

https://cambox.b2b.web.tr/kataloglar/cambox/Diamond%20Series%20D300-1000.pdf