Eye ring expansion screws secure items to concrete, bricks, walls, masonry, and anchors. Widely used indoors and outdoors for purposes such as suspending heavy objects, home decor, engineering installations, securing fences, sandbags, hammocks, swings, installing air conditioners, reinforcing anti-theft doors and windows, etc.SpecificationColor: SilverMaterial: 304 Stainless SteelThread Size: M8Bolt Size: M8x70mmThread Length: 70 mm / 2.76 inchEye Ring Size: 33.6 x 20.5 mm / 1.32 x 0.81 inch (OD x ID)Total Length: 95 mm / 3.74 inchCasing size: 45 x 11.5 mm / 1.77 x 0.45 inchLoad capacity: 170 kg / 374.79 lbPunch Hole Length: 50 mm / 1.97 inchPacking List: 2 Pcs x Ring-shaped eyeboltAdvantageReliable 304 Stainless Steel - Eye Ring Expansion Screws crafted from 304 Stainless Steel, exhibit robust durability, making them suitable for humid environments. They feature wear resistance, corrosion resistance, and exceptional rust-prevention capabilities.Deep Thread Design - The screws come with a clear thread pattern, ensuring even force distribution during application and providing great fastening strength.Instruction1. Choose a drill bit that corresponds to the diameter of the expansion screw sleeve, securely attach it to the electric drill, and drill a hole of the appropriate size.2. Place the expansion bolt into the drilled hole, use a wrench to tighten the nut, and subsequently tighten the lifting ring.NOTE1. Drill straight down to ensure the hole is not overly large.2. Avoid using it for heavy objects or machinery that produce significant vibrations.