For Wood Post in Level - These stainless steel protective sleeves fits 1/8" wire rope on wood posts & wood posts with PVC sleeves. NOT for angle applications or metal posts. They prevent the wire rope from being damaged by friction wear. If you want protective sleeves fit for 5/32" 3/16"wire rope, please search Muzata CR88,Easy to install - Package comes with 100PCS Protective Sleeves, 1pc matching drill bit that help you drill holes easily. Adding these protective sleeves will make cable easier to go through a pole and also help to maintain proper cable tension,Clean Finished Look - The protector sleeve grommet can cover the ragged holes after drilling and create a clean look, adding a nice finishing touch to the overall look. If you prefer a larger flange, please search Muzata CR22,Ideal for indoor and outdoor - This cable railing hardware is made of marine grade T316 stainless steel, which has excellent resistance to rust, corrosion and extreme weather even coastal applications subject to high humidity and salt air,Advice for constructing a system - You can find other kits on our store to build a complete cost-effective cable railling system easily, including 1/8" swage lag screw Muzata CK17, level protector sleeve MUZATA CR13, angle protector sleeve MUZATA CR68, 1/8" wire rope MUZATA WR02,hydraulic crimper and cable cutter MUZATA CK12, drill guide MUZATA CT09.