In the folded position, this hardwood and brass ships' hooks fit snugly in to frames, so if someone collides with them, hooks will not cause injury. This also prevents snagging of clothes. They are strong enough to carry a full complement of oilskins, but smart enough to mount 'on show'. Useful in narrow spaces at home, too! All are 4" high. Protrusion from the wall is approximately 10mm.