Improve the performance of your Ruger Security 9 with a HIVIZ LITEWAVE sight set. The bright and ultra-durable HIVIZ sights will enhance your confidence and shooting experience. Litepipe diameter: Front Sight: 0.090″ Rear Sight 0.078″. Replacement LitePipe Handgun version # 5 for front sight, rear interchangeable litepipe. Front Sight Length: 0.751″. Front Sight Width: 0.480″ Front Sight Height: 0.273″. Rear Sight Length: 1.082″. Rear Sight Width: 0.690″. Rear Sight Height: 0.382″.