uxcell Album Book Nickel Plated Binding Screws Binder Posts 5x18mm 50pcs Product Name: Screw Post; Material: Metal, Nickel Plated Weight: 166g; Package Content: 50(+/-2%)pcs x Screw Post Main Color: Silver Tone; Fit Hole Size: 5 x 18mm/0.2" x 0.71"(D*L) Thread Length: 5mm/0.2" Head Diameter: 9mm/0.35"