Reinforce or Repair Furniture - No more wobbly legs! This furniture leg attachment plate is designed to attach legs to new or damaged sofas, couches, seats, ottomans and more. Industry Standard Each T-plate is 2" x 2" (L x W) and 1 or 4" deep (approximately). Plates have 5 or 16" threads (metric M8) for attachment holes for boom bolts, with 4 unthreaded holes (5 mm). Installs easily in minutes - no need to buy boom bolts separately. You're all set to install furniture legs! Set includes all necessary parts - 4 sets of sofa leg mounting plates 4 M8 suspension rods 4 M8 female adapters 16 screw adapters for 5mm unthreaded holes. Converts to US Standard Legs - If your sofa legs have pre-drilled holes for M10 boom bolts, these plates allow you to use standard 8mm to convert to US Standard legs, simply attach these mounting brackets over the holes in the furniture frame That's it. 4 sets. You are ready to install everything you need. Add them to your cart and save even more! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.