Review on Mid-Century Modern 3-Inch Wood Furniture Legs: Pack of 4 Square Couch Legs in Brown - Ideal Replacement for Armchair, Recliner, Coffee Table, Dresser by Todd Taniguchi

That's great, they solved my problem! I'm tired of sitting on the floor with my low sofa. It wasn't cheap, bought it from Pottery Barn but the legs were only 3 inches. I was initially nervous about switching legs and wondered if it would be stable. I got the 6 inch legs they were so easy to attach I just had to unscrew them as the inside is metal. No additional equipment required. Apparently, cheaper sofas don't have a metal female part, but a disposable plastic one. This is where additional hardware/special wood glue comes into play.