All of them comes with screws.When screwed into a stud, these posts are very strong and have been tested to hold 62lbs.
Total Width:4″ Depth:9″ Post Diameter:4.75″ Materails:sisal rope /cotton rope
Both sisal rope & cotton rope are available for you to choose from. The are all natural material for your cat to scratch. Cotton rope looks white and feels more smooth and soft, while sisal rope is yellowish and feels more rough. If it is a kitten at home, cotton rope is more suitable, big cat would like sisal rope better