Hammock suspension kit comes with 2 pcs M8 eye plates (LW80 50mm/diameter8mm), 8 pcs stainless steel screws and 8 pcs wall anchor bolts that fit for hammock hook. The drill bit you need is 8mm. Heavy duty hammock hooks can be attached to wood buildings, brick walls, timber, etc; hammock hooks for concrete, for wall indoor outdoor hammock, swing and accompanying fixtures, heavy duty ceiling hooks attach the plates to brick wall, no matter vertical or horizontal ceiling for swing chairs (br) M8 Hammock suspension hooks are 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) Ceiling hooks heavy duty, Hammock suspension hooks heavy duty supports 1100lbs when properly attached (550lbs per eye plate) which makes them perfect additions for the bedroom or kids play room (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 chair (br) (br) (br), Hammock hook suspension kit can also be used on brick built garage walls for accompanying fixtures (br)