No tools needed, and no more sore thumbs! The handy 'thumbsaver tool' prevents bruising, while J-Hook drywall hangers let you hang 'hangable' art up to 20 lbs. directly into drywall in seconds. No studs, no drills, no tools needed. Hook's unique design makes it easy for anyone to install it securely by hand in moments. Leaves only a tiny hole upon removal, so great for renters as well as homeowners.