Rust Resistance: We tested the rust resistance of several hooks. Based on the test results, we selected these mesh hooks. They are of the highest quality. These hooks are made of high-quality iron and, thanks to their electro-galvanized surface treatment, minimize rusting of the mounting hooks. Reasonable Size: A set of 20 three-hole tarp hooks, these curved iron hooks measure approximately 53 mm high, 39 mm wide, and 3 mm thick, with three drilled holes, each 5 mm in diameter, in the core, holes spaced 24 mm apart on the top edge, and a hook nose height of approximately 25 mm. Straight Back: Our tow bar is of superior quality and durability and has a completely flat back. It doesn't wobble, and you don't need to use shims underneath; just screw it in place. Extremely durable, it can withstand extreme strapping forces without any problems! Quick Attachment: Thanks to the practical shape of the eyelets and hooks, the contact surface is very flat and has three holes. It is therefore ideal for attaching tarps, nets, and lashing straps! Screwed or riveted to the side of the trailer, it is absolutely solid and secure! Practical Use: You can mount the net hook on the lifting platform at the rear of the trailer to better secure the tarp or trailer net to the trailer. However, you can also use the 3-hole hook as a normal hook, for example, to secure tools. It can be used on boats, car trailers, trailers, or loading bays.