The HiViz Target Sight is bright, ultra-durable and will enhance your confidence and shooting experience. It features an all metal construction and interchangeable LitePipes front and rear. Front Sight width: 0.120″. Front Sight Height: 0.215″. Rear Sight Notch Width: 0.140″. Rear Sight Height: 0.224″. LitePipe Diameter Front Sight: 0.090″. LitePipe Diameter Rear Sight: 0.078″. Replacement LitePipe Handgun version # 6. Model does not fit 42,43,43x,48. Front Sight Length” 0.584″. Front Sight Width: 0.120″. Front Sight Height: 0.260″. Rear Sight Length: 0.750″. Rear Sight Width: 0.660″. Rear Sight Height: 0.309″.