It effectively covers unsightly holes in the wire rope and prevents water from penetrating, resulting in a clean and smooth overall appearance. Additionally, deck cable railing hardware prevents wear and tear caused by wire rope vibration. Deck guard rail kits are not only practical but also enhance the overall visual appeal. Wheel Cable Railing Kit Protective Cover is only suitable for metal posts with thickness Less than 1.5mm (0.06inch) and hole diameter = 10.5mm (0.6inch). Stainless steel protective sleeve outer ring diameter: 17mm (0.7 inches); rear wheel diameter: 10.5mm (0.6 inches) The stainless steel deck protector is made of T316 stainless steel, which is waterproof, rust-proof and -proof. Suitable for coastal areas and environments with elements. 3/16inch stainless steel protective sleeve fits 1/8inch diameter 5/32inch 3/16inch diameter steel cables on horizontal metal posts. 3/16-inch grade wheel protectors are designed for straight-line operation. 3/16-inch protective sleeve for deck cable railing hardware can withstand loads of over 200 lbs, increasing the tension and load-bearing capacity of steel cables Colour:Black Material:Stainless steel Size:3/16Inch Package Contents: 20 * Cable Railing Kit Protective Cover 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.