This tiny (1" diameter) 1 Watt LED lamp is designed for utility use wherever a bright LED light source is needed. Fully waterproof and vibration resistant. Size is just 1" wide by 1.1" deep. The threaded mounting rod is 1" deep and permits installation through thick panels. Rod diameter (hole diameter for mounting) is 5mm. An optional 90 degree mounting bracket is included. Use the lamp with or without the bracket. Bracket mounting hole is #10 (5mm). Light output: 1 Watt; 100 Lumen. Color temperature: 5000K (Cool White). Insulated power cord; 3' length. See all our LED lighting products on Amazon.