This tensioning accessory offers many advantages by using fencing to help safely restrain cattle and other livestock. It is trusted by ranchers and farmers for proper tensioning of fence lines. The wire tensioner has a screw-in mechanism that easily tightens the wire/rope and maintains the desired tension. Tensioners are weather-resistant and strong enough to withstand the wear and tear of extreme weather conditions. tape tighteners come in packs of 12 and feature a butterfly handle style screw mechanism. Diameter: 65 x 55mm/2.6inch x 2.1inch Colour:Black Material:Plastic Package Contents: 12 * linear tensioner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.