The Kable Lite Plaster Anchor Set from Visual Comfort Architectural, formerly known as Tech, Lighting is required for you to be able to mount anchors and turnbuckles to plaster surfaces. Two comes with each order, which means that if you have more than two anchors or turnbuckles, you’ll have to place more orders. They’re made out of metal which gives them the durability necessary to withstand the test of time.