The hammock hanging kit comes with 2 M8 pad eyes (LW80 50mm/diameter8mm), 8 stainless steel screws, and 8 wall anchor bolts suitable for hammock hooks. The drill you need is 8mm. Heavy-duty hammock hooks can be attached to wooden buildings, brick walls, timber, etc.; hammock hooks for concrete, for indoor outdoor hammock wall, swing, and included fasteners, heavy-duty ceiling hooks attached the plates to brick walls, whether vertical or horizontal ceiling for swings(br)M8 Hammock Hanging Hooks set is made of 304 stainless steel(br) And we have also upgraded the screws to 304 stainless steel now, suitable for mounting on solid walls, ceilings, floors, decks, trees, etc. Our hammock hooks can provide stronger support for HANGING PROJECTS(br)Heavy-duty ceiling hooks, Hammock Hanging Heavy Duty Hooks Support 1100lbs when properly attached (550lbs per pad eye), making them perfect additions for bedrooms or children's playrooms(br)Enjoy a relaxing time if you have a hammock in your room, garden, patio, backyard(br)(br)(br), Hammock Hardware perfect for hanging your indoor outdoor hammock chair, swing seat(br)(br)(br), The hammock hook hanging kit can also be used on brick garage walls for included fasteners(br)