To be mounted in the floor or wall. The bolt is 10 mm, so you need. drill for making a whole, the drill dimension needs to be 10 mm. The door stops works for all sorts of floors, works great for hardwood floor or concrete ground.
OUTSIDE (furn.leg) (Prim.metal legs)
INSIDE (furn.leg) (Only metal legs)
ON-TOP (furn.leg) (Only wooden furn.leg)