Black Swage Threaded Tensioner w/ Hidden Threads Sale! from $12.99 Size 1/8" 3/16" Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Swage Threaded Tensioner w/ Hidden Threads For 1/8" and 3/16" cable. These tensioning fittings are typically used for metal posts. They are 2" long and the cable/attachment is hidden inside the fitting for a clean look.