[Size] Cable railing kit for 1/8 inch, 5/32 inch, and 3/16 inch cable railing posts. Overall Length of Sleeve = 13/32 inch. Flange Diameter = 21/32 inch. The range of metal posts hole size: 13/32 inch to 15/32 inch. Cable railing kit protector sleeves fit most cable railing metal posts. [Applications] These cable railing protector sleeves fit 1/8 inch, 5/32 inch, and 3/16 inch stainless steel cables. They help prevent moisture from entering inside a metal post. They can also avoid contact between the cable and railing caused by abrasion and noise, increasing the service life of the railing. [Material] Our cable railing kit protective covers are made of high-quality materials with high toughness, flexibility, and compatibility. The material is waterproof and corrosion resistant, ensuring long-lasting durability matching your stainless steel cable. These properties make our balustrade hardware suitable for installation. The cable railing system requires minimal maintenance. [Easy to install] Features an invisible opening design. Without cumbersome steps or tools, installation is simple and cost-effective. This allows the cable railing to be quickly put into use, making your railing posts look neat and attractive. Material: Rubber Color: Black Package Contents: 100 x Cable Railing protector sleeves Note: Light reflection and different displays may cause slight color differences between the item in the picture and the actual product. Measurement allows an error of +/- 1-3 cm.