#2844 CKP Brand 1-3/16 in. (30mm) Rounded Square Knob, Brushed Nickel - 10 Pack Diameter: 1-3/16 in. x 1-3/16 in. (30mm x 30mm) Projection: 1 in. (25mm) Base Diameter: 5/8 in. x 5/8 in. (16mm x 16mm)