Professional marine grade cast stainless steel Strong corrosion resistance and durable in saltwater circumstance High polished surface for mirror-like appearance and to match modern watercraft/boat/yacht Easy to install You can attach rope to it to fix or some objects, such as use it with rope to fix boat canopy covers or for other applications Specification: Colour:Silver Material:Stainless steel Size:4.8 x 1.4 cm Hole Diameter: Approx. 0.31 inch/0.5 cm Two holes center spacing: Approx. 1.54 inch/3.9 cm Package Contents: 4 * Boat Deck Fitting Only the above package content, other products are not included. Note: Light shooting 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.