Please pay attention to the size before purchase, Maybe will have 1-2mm error, Desk locks with key are different. Material: Zinc Alloy Screws:M4 x 16mm. Lock Head Diameter:16mm; Lock Cylinder Length:20mm. BackPlane Width: 41mm; BackPlane Heigth:16.5mm. Please pay attention to the size before purchase. Maybe will have 1-2mm error. If there is any question or problem, please feel free to contact us first, we'll try our best to solve it for you within 24hours.