VistaView CableTec Stainless Steel Protector Sleeves for 1/8", 5/32" or 3/16" Cable Railing (Inserts for Wood Posts) - Lot of 100 FUNCTIONAL  Protector Sleeves on wood posts help maintain proper cable railing tension over time. DECORATIVE  The stainless steel flanges offer a great-looking aesthetic for dressing up any wood post holes. HIGH-GRADE STAINLESS STEEL  These sleeves are made of T316 marine-grade steel that offers maximum durability. DO IT YOURSELF  Combine sleeves with any type of 1/8, 5/32 or 3/16 DIY cable railing hardware or kit. LONG-LASTING RELIABILITY  VistaViews hardware is highest grade of stainless in the US market, allowing you to install and not worry.