Turn buttons are used for holding flush fitting doors and gates closed. NOTE: Use a 4.0 x 30mm screw to attach to door/gate. Fixings not included. Holds doors closed No security" Size mm: 67 Size inch: 2 1/2 Material: Steel Finish: Zinc Timco Turn Buttons - Zinc (Size 2 1/2 " - 20 Pieces) in Silver