Package contains: 12 pieces transparent rectangular rubber feet. Mounting hole: 4mm 5/32 inch; Material: plastic. Overall dimensions: 40x15x7mm (1-37/64x19/32x9/32 inches). Easy to install, just place them under the feet of tables, chairs, cabinets, shower stools, etc. Advantages: corrosion resistance, frost resistance, antistatic, skidproof, moisture-proof, sound insulation, heightened furniture feet.