●5 mm/ 0.20 inch in diameter and 18 mm/ 0.71 inch in height ●Comes with 120 pcs shelf pins in the package. ●Made of stainless steel, very smooth surface, anti-rust, anti-corrosion, strong and durable for long using life ●Used For Shelf holes on cabinets, entertainment centers, bookcases, and more ●Warm notice: in order to make dowel pins a tight fit, your hole should be equal to or slightly smaller than the diameter shown (less than or equal to 5 mm)