If you've got wobbly furniture or uneven floors, these adjustable levelers are about to become your new best friends. You get 16 pieces with M6 x 15mm threaded stems that adjust from 6mm to 20mm total height - perfect for leveling out chairs, tables, cabinets, or any furniture that rocks on uneven surfaces. The plastic bases are the real genius part - they protect your floors from scratches, reduce noise when moving furniture, and won't leave rust rings like metal feet sometimes do. Installation is straightforward - just screw them into any M6 threaded socket (common on lots of furniture legs), then adjust the height until everything sits perfectly level. I've used these on everything from cheap IKEA furniture to industrial equipment, and they make such a difference in stability. The plastic material grips surfaces well without slipping, and the wide 21mm base distributes weight evenly. Whether you're dealing with rough concrete, uneven tiles, or just want to protect your hardwood floors, these levelers deliver that rock-solid stability that makes furniture feel so much more substantial and professional.