Fit for 33-Degree Stairs: These 33-degree beveled angle washers are designed to be placed between the cable railing kit and post on 33-degree staircases. The washer holes are 23/64 inch (9mm) and compatible with 5/16 inch (8mm) thickness cable railing hardware kits. They can be used with 8mm thick terminals. Size & Compatibility: Angle washers feature an inside diameter of 0.35 inch (9mm) and an outside diameter of 0.63 inch (16mm). The package includes 24 pieces of 33-degree angled beveled washers, ideal for use with an invisible system kit to achieve a professional and finished appearance for staircase projects. Marine Grade SST316 Material: Made from marine-grade SST316 stainless steel, these beveled angle washers offer excellent rust and corrosion resistance, suitable for harsh weather conditions. They are built to last and will not rust after years of use. Easy Installation: Designed with a beveled angle and sturdy construction, these washers resist deformation. They are user-friendly and easy to install, making them ideal for DIY cable railing projects requiring a clean and neat finish. Wide Application: The 33-degree washer design is suitable for most standard stairways and can be used with stainless steel invisible receivers and wire rope. Compatible with wood, steel, and aluminum posts for deck railings, offering versatile application. Color: Silver Material: Stainless Steel Package Contents: 1 set of cable railing hardware Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.